Mechanical Seal | John Crane

Mechanical Seals

The scope of our mechanical seal product range far exceeds any other seal manufacturer. From small elastomer bellows seals used in millions of domestic water pumps to double mechanical seals that ensure maximum sealing safety and large, highly customized dry-running gas seals for mission critical high speed turbo compressors, John Crane has the right product for any application.

Our world-class rotating equipment technologies, paired with an unmatched breadth of applied engineering expertise, meet virtually all international standards including API 682 and help plants reduce maintenance costs, slash down time and improve reliability. When it comes to keeping your rotational equipment running 24/7, John Crane’s comprehensive range of mechanical seals and systems has you covered.

Developing new liquid hydrocarbon pipeline seals and 'NPSS' technology

Advanced Duty Pump Seals

A range of seals for mission-critical applications, designed to solve the application-specific challenges of each industry. From API 682 compliance for the oil and gas industries, using gas seal technology on our innovative pump gas seals to eliminate fugitive emissions, dealing with slurry in the mining and minerals processing industries, to the difficulties associated with maintenance on large pumps and rotating equipment — we have a solution.

Maximize plant reliability

Gas Compression Solutions

Dry-running, non-contacting gas seals have been the industry standard since the early 1980s for turbomachinery. John Crane gas seals, separation seals and support, monitoring, control and conditioning systems — the heart of any reliable sealing solution — are constantly evolving to meet the needs of customers. The product portfolio is supported by unrivaled global service capability providing repair, retrofit, gas seal storage and reliability expertise, delivering total solutions throughout the product lifecycle.

API 692 specification

Vessel and Agitator Technologies

In industries like chemical, pharmaceutical, pulp and paper, and food and beverage, safeguarding and compliance with industry standards, avoiding contamination and efficiency are always top priorities. Our range of vessel and agitator seals optimize equipment performance, maintain product purity and conform to industry regulations, no matter where you are.


Discover your solution


General Rotating Equipment Applications

Our range of mechanical seals, packing and bearing isolators combines advanced, thoroughly proven technologies with extensive industry expertise to create a range of products characterized by innovative design concepts and outstanding manufacturing quality. Tried, tested and effective solutions for virtually any application that deliver robust performance, reduced installation times and lower maintenance costs.

Reduce installation time

Seal Support Systems for Pumps

Create the optimum operating environment that will ensure outstanding seal performance and reliability. Our comprehensive range of engineered pressure reservoirs, gas seal control panels, heat exchangers and abrasive separators can be combined to produce the perfect seal support system for any application.

Seal Face Treatments

Designed to overcome rigorous challenges, our comprehensive suite of seal face technologies combat limited seal face lubrication that adversely affects reliability, cost and durability. Our engineers designed these face treatments to extend rotating equipment life through advanced micro machined patterns and features improving seal face lubrication that optimizes equipment performance. We deliver the right face technology for the right application.

Dynamic Lift Up-stream Pumping face technology overview

Mechanical Seals Products

Showing 1–126 of 126 products

Aura®

The Next Generation of John Crane Gas Seals

ARUA Seal

Aura® reduces operational and transactional costs using a patented polymeric sealing device.

Aura® 120NS

Narrow Section Dry Gas Seal

Aura™ 120 Narrow Section Dry Gas Seal

Do you want to retrofit to the latest gas seal technology? Aura® 120NS eliminates oil lubrication and the resulting need to address methane that has become…

Type 28AT

Non-contacting Gas Seal for Turbo Compressors

IMG1414

Type 28AT: The original gas seal, with a design pedigree stretching back over 30 years and evolving gradually, installed and...

Type 28XP

Non-contacting Gas Seal for Turbo Compressors

IMG1426

Type 28XP: Possibly the most popular seal in the range today, the Type 28XP builds on the 28AT design and...

Type 28EXP

Non-contacting Gas Seal for Turbo Compressors

IMG1415

Type 28EXP: The product for the most challenging and hostile environments with proven and independently audited performance to 425 bar(g)....

Type 28ST

Non-contacting Gas Seal for Steam Turbines

IMG1421

Type 28ST combines proven rotating groove technology and high-temperature secondary seals to reduce steam leakage by nearly two orders of...

Type 28VL

Non-contacting Gas Seal for Vaporizing Liquids

IMG1473

Utilizing proven spiral groove technology, the Type 28VL harnesses the rotational energy of the pump shaft to vaporize the process fluid at a controlled rate…

Type 83

Separation Seal (Contacting Technology)

IMG1430

The Type 83 is a dual-segmented carbon bushing assembly designed to prevent the migration of bearing oil to the dry...

Type 93FR

Separation Seal (Non-contacting Technology)

IMG1645

The Type 93FR is a non-contacting carbon bushing designed to protect dry gas seals from bearing oil ingress. Segments are...

Type 93LR

Segmented Lift-off Carbon Bushing (Non-contacting) Separation Seal

The Type 93LR is a non-contacting segmented bushing seal with a balanced lift-off carbon design that minimizes the gas consumption in both pressure and flow…

Type 1

Full Convolution Industrial-duty Elastomer Bellows Shaft Seal

Type 1 Photo

With its proven track record of exceptional performance, the Type 1 elastomer bellows seal is widely recognized as the industry's...

Type 2

Multi-purpose Non-pusher Elastomer Bellows Seal

type-2

The Type 2 mechanical seal is available in single, double and balanced arrangements. An outside-mounted spring results in a compact working height...

Type 21

General-duty Elastomer Bellows Shaft Seal

21 lg

Our general-purpose mechanical seal has become the industry standard for OEM designers. Automatic adjustment compensates for abnormal shaft-end play, run out,...

Type 2100

Fully Unitized, Heavy-duty Elastomer Bellows Shaft Seal

Type 2100 Photo

Designed for demanding applications, the Type 2100 mechanical seal is a compact, unitized, single-spring elastomer bellows mechanical seal that offers maximum durability...

Type 2106

Fully Unitized Elastomer Bellows Shaft Seal

2106 sm

The Type 2106 mechanical seal is a compact, unitized, single-spring elastomer bellows seal that not only offers durability and performance but...

Type 4111

Single-use Elastomer Bellows Cartridge Seal

T4111 Single-use Elastomer Bellows Cartridge Seal

Suitable for DIN and ANSI pumps using aqueous solutions, engineered to simplify installation, reduce maintenance and save on overall costs.

Type 502

Unitized Elastomer Bellows Seal

502 lg

The Type 502 mechanical seal is one of the best-performing elastomeric bellows seals available for general service, excellent in a wide...

Type 5611/5611Q/5611L

Universal Cartridge™ Seal Family — Single Cartridge Elastomer Bellows Seal

type 5611 photo

The Type 5611 mechanical seal is the first truly universal cartridge seal — and its modular family concept will change your approach to sealing. Because…

Type 6

Low-pressure Elastomer Bellows Unitized Seal Head for Small-diameter Pumps

6 lg

This compact, unitized, single-spring, elastomer bellow mechanical seal is designed for use in small centrifugal water pumps, deep- and...

Type 8648VRS

Single and Dual Non-pusher Elastomer Seal

8648VRS

8648VRS is a standardized non-pusher elastomer mechanical seal using patented technology, designed specifically for difficult hydrocarbon oil pipeline applications. It is designed specifically with a…

Type 8628VSC

Non-pusher Secondary Containment Seal

8628VSC is a standardized non-pusher elastomer, dry running non-contacting secondary containment seal designed specifically for refined oil hydrocarbon services, with a focus on meeting the…

Secondary Containment Bushing

Secondary Containment Device for Plan 66A Crude-oil Pipeline Applications

Secondary Containment Bushing 66A

The SCB Secondary Containment Bushing is a standardized, dual-bushing arrangement intended for . . . 

Type 8648SC

Non-pusher Dry running Secondary Containment Seal

The John Crane 8648SC is a standardized non-pusher elastomer, dry running, secondary containment seal designed specifically for non-crude oil hydrocarbon services, with a focus on…

ECS®

Metal Bellows Dry-running Secondary Emission Containment Seal

ECS® Metal Bellows Dry-running Secondary Emission Containment Seal

Available in low- and high-temperature designs, the ECS® is a dry-running seal for emission containment and safety/backup that successfully controls...

Type 2874HTC

Non-contacting, Metal Bellows, Outward Pumping Dual Pressurized Gas Lubricated Seal

Reliably sealing high and low temperature process fluids up to 425°C (800°F), the Type 2874HTC incorporates unique HTC (high-temperature, corrosion-resistant) metal bellows technology with non-contacting…

Type 285

Gas-lubricated, Non-contacting Single Seal For Cryogenic Pumps

285 Seal Gray

As the worldwide leader in spiral groove technology, John Crane is the first to utilize non-contacting seals...

Type 1604

Single Stationary API 682/ISO 21049 Metal Bellows Cartridge Seal Type C, Arrangement 1

Type 1604

The Type 1604 high-temperature, high-performance Type C, Arrangement 1, API 682/ISO 21049 qualified cartridge seal is designed for high-temperature applications such...

Type 1604HTC

Single Stationary Welded Metal Bellows API 682 Cartridge Seal Type C, Arrangement 1

The Type 1604HTC is an API 682/ISO 21049 qualified single stationary bellows cartridge seal Type C, Arrangement 1. The Type...

Type 1670

API 682 Category II and Category III, Type B, Arrangement 1 Single Rotating Metal Bellows Cartridge Seal

Type 1670 API 682 Category II and Category III, Type B, Arrangement 1 Single Rotating Metal Bellows Cartridge Seal

The Type 1670 is a factory pre-set edge-welded metal bellows API 682/ISO 21049 qualified cartridge seal with Alloy C-276 (UNS N10276)...

Type 2609HTC/3609HTC

Dependable API 682/ISO 21049 Cartridge Seals

Type 2609HTC 3609HTC Dependable API 682/ISO 21049 Cartridge Seals

The Type 2609HTC and Type 3609HTC are dependable API 682/ISO 21049 cartridge seals that utilize two impressive design innovations by...

Type 2609HTL/3609HTL

Dual Unpressurized and Pressurized Rotating Bellows Cartridge Seals (API 682 Type C, Arrangement 2 and 3)

2609HTL1

Type 2609HTL is a dual unpressurized rotating bellows cartridge seal API 682 Type C, Arrangement 2. Type 3609HTL is a...

Type 2715T

High-temperature Single and Dual Metal Bellows Cartridge Seal for Dean Bros. Pumps

2715T Isometric lg

The Type 2715T is available as a single or dual high-temperature cartridge seal for Dean Bros. pump models R434, R454...

Type 3604/3604HTC/3604HTCDP

API 682/ISO 21049 Type C, Arrangement 3, Stationary Metal Bellows Cartridge Seal

TYPE 3604 Dual Scroll API 682/ISO 21049 Type C, Arrangement 3, Stationary Metal Bellows Cartridge Seal

The Type 3604/3604HTC/3604HTCDP is a highly reliable dual face-to-face stationary cartridge seal for high-temperature refinery services that is fully API...

Type 4615

General-purpose Single Cartridge Metal Bellows Seal

The 4615 is a metal bellows seal that replaces the EZ-1®General-purpose Single Cartridge Seal. It is a member of the 4600 family of cartridge seals…

Type 515E

Asymmetric Formed Metal Bellows Designed for General Purpose Use

MetalBellow515E lg

Asymmetric formed metal bellows designed for general purpose use. General sealing duties include biotechnology, chemical processing, food processing, mining, oil,...

Type 5615/5615Q/5615L

Universal Cartridge Seal Family — Single Cartridge Metal Bellows Seal

5615 lg

The 5600 Series is the first truly universal cartridge seal — and the modular family concept of John Crane's Universal Cartridge will change your approach…

Type 5625/5625P

Universal Cartridge Seal Family — Dual Cartridge Metal Bellows Seal

5625

The 5600 Series is the first truly universal cartridge seal — and the modular family concept of John Crane's Universal Cartridge will change your approach…

Type 5625P-1

Universal Cartridge Seal Family — API 682 Qualified Dual Cartridge Unpressurized/Pressurized Metal Bellows Seal

High-performance, low-emission, non-pusher seals, the Universal Cartridge 5600-1 Series is a modular cartridge seal family that includes interchangeable metal bellows...

Type 604

High-temperature, Stationary Edge-welded Metal Bellows Seal

604 lg

The Type 604 is a high-temperature, general-purpose, stationary edge-welded metal bellows assembly for applications to 425C/800F. Available in either AM350...

Type 604HTC

High-temperature, Corrosion-resistant Stationary Bellows Assembly Utilizing "HTC" Technology

Type 604HTC High-temperature, Corrosion-resistant Stationary Bellows Assembly Utilizing "HTC" Technology

The Type 604HTC high-temperature, corrosion-resistant welded metal bellows seal is a unique advanced technology for reliably sealing fluids in harsh...

Type 606

High-temperature, Rotating Edge-welded Metal Bellows Seal with Drive Lugs

606 lg

The Type 606 is a high-temperature (to 425°C/800°F) rotating seal with the same high-strength design features as the Type 609....

Type 609

High-temperature, Rotating Edge-welded Metal Bellows Seal

609 lg

The Type 609 is a high-temperature (to 425°C/800°F) rotating seal head assembly that incorporates all of the rugged features of...

Type 609HTC

High-temperature, Corrosion-resistant Rotating Bellows Assembly Utilizing "HTC" Technology

Type 609HTC High-temperature, Corrosion-resistant Rotating Bellows Assembly Utilizing "HTC" Technology

The Type 609HTC is a high-temperature bellows assembly intended for those demanding applications where a dependable, high-strength, rotating seal is...

Type 613

Wet/Dry Running Single Metal Bellows Cartridge Seal

613 lg

Using the time-tested and proven dry sliding technology from our Emission Containment Seal (ECS®), the Type 613 is ideal for...

Type 670

Low-temperature, All-Alloy C-276 Metal Bellows Shaft Seal for Highly Corrosive Fluids

670 lg

The Type 670 is an all-Alloy C-276 rotating bellows seal, providing high strength and excellent corrosion resistance. It is...

Type 675

Low-temperature Titanium Edge-welded Metal Bellows Seal

The Type 675 is a rotating titanium welded metal bellows assembly. The titanium bellows is ideal for chlorine, chlorine dioxide...

Type 676

Low-temperature, AM350 Metal Bellows Shaft Seal for Mild Corrosive Services

676 lg

The Type 676, with a rotating AM350 stainless steel bellows, is well suited for mild corrosive and....

Type 680

Low-temperature, General Duty All-Alloy-20 Edge-welded Metal Bellows Seal

680 lg

The Type 680 is the ideal seal for general-purpose applications. Its rotating Alloy-20 bellows provide corrosion resistance in a broad...

Type GL1B

Formed Metal Bellows Seal for General Service

Type GL1B Formed Metal Bellows Seal for General Service

The Type GL1B is a double-ply formed bellows seal to meet the dimensional requirements of DIN 24960 L 1K. The...

Type 2800E

Non-contacting, Gas-lubricated Seals for Small-bore Rotating Equipment

2800E lg

The rotating mating ring features micromachined spiral grooves that compress an inert barrier gas and create a lifting force on...

Type 2800EH

Externally Mounted, Gas-lubricated, Non-contacting Cartridge Double Seal for Pumps

IMG1184

The John Crane Type 2800EH is a non-contacting dual seal for non-turbo small-bore rotating equipment applications, meeting the requirements of...

Type 2800EX

Externally Mounted, Gas-lubricated, Non-contacting Cartridge Double Seal For Pumps

IMG1183

Unique spiral groove technology patented John Crane spiral grooves are machined into the mating ring faces. A pressurized suitable inert...

Type 2800XA

Non-contacting Gas-lubricated Dual Cartridge Seal for Large-bore Pumps

The patented technology and tolerant design make these seals ideally suited for applications requiring specially engineered seals with performance even...

Type 2800XP

Non-contacting, Gas-lubricated Dual Cartridge Seal for Large-bore Pumps

2800XP Final

The John Crane Type 2800XP is a non-contacting dual seal for non-turbo, large-bore rotating equipment applications, and complements the John...

Type 2800XS

Non-contacting, Gas-lubricated Dual Cartridge Seal for Large-bore Pumps

Type 2800XS is the designation used for specially engineered seals designed for operation outside the normal parameters of Types 2800XA and 2800XP...

Type 2874

Non-contacting Dual Gas Seal Cartridge for Pumps

Type-2874

The Type 2874 is an internally pressurized, gas-lubricated, non-contacting dual cartridge seal designed for use in API, ANSI and DIN...

Type 28SC

Non-contacting Secondary Containment Seal

28SC isometric

The 28SC is a gas-lubricated, non-contacting secondary containment seal, which is applied as a component of a multiple seal...

Type 1648

API 682-qualified, Single Cartridge, Type "A" O-ring Pusher Seal

1648 lg

The Type 1648 is a high-performance single cartridge pusher seal designed to help prevent emissions leakage in most refinery applications....

Type 2648

API 682-qualified, Dual Unpressurized Cartridge, Type "A" O-ring Pusher Seal

The Type 2648 is a high-performance, low-emission cartridge seal designed to provide additional safety for hazardous applications and applications where...

Type 270F

Heavy-duty Cartridge Seal for Boiler Feed Circuit Applications

270F Final

Suitable for larger equipment, the Type 270F is a boiler feed seal designed for the most demanding performance, and is...

Type 34

Elastomer O-ring Pusher Seal

The Type 34 is a short, DIN-balanced seal for general duty in the processing, refinery and petrochemical industries. Alternative seat...

Type 3648

API 682-qualified, Dual Pressurized Cartridge, Type "A" O-ring Pusher Seal

Type-3648

The Type 3648 is a high-performance, low-emission cartridge seal designed for maximum containment of hazardous fluids and light hydrocarbons. Its...

Type 4610

Compact, General-duty, Single Cartridge O-ring Seal

4610 lg

The Type 4610 single cartridge seal, available off-the-shelf the world over, combines affordability with fluid-sealing dependability...

Type 4620P

Compact, General-duty, Dual Cartridge O-ring Seal with Pumping Ring

4620p lg

The Type 4620P dual cartridge seal, available off the shelf the world over, brings a new...

Type 48VBF

Low leakage, high temperature shaft seal for uncooled boiler-feed-water

Type 48VBF

The Type 48VBF is a single seal that can operate without a cooling water system(external heat exchanger, API Plan 23) in critical high temperature pumps…

Type 48HP

Low-emission, High-pressure O-ring Shaft Seal for Light Hydrocarbon Services

48HP lg

Type 48 seals evolved from the successful, proven John Crane Type 8B1 design, the preferred choice for safe, reliable, unpressurized...

Type 48LP

Low-emission, Low-pressure O-ring Shaft Seal for Light Hydrocarbon Services

48LP lg

Type 48 seals evolved from the successful, proven John Crane Type 8B1 design, the preferred choice for safe, reliable, unpressurized...

Type 48MP

Low-emission, Moderate-pressure O-ring Shaft Seal For Light Hydrocarbon Services

48MP lg

Type 48 seals evolved from the successful, proven John Crane Type 8B1 design, the preferred choice for safe, reliable, unpressurized...

Type 48SC

Dry-contacting Secondary Containment Seal

48SC

Dry-running, contacting seals employ a technology based on careful material selection and precise control of contact forces. They are...

Type 48XP

High-performance Cartridge, Multi-spring, O-ring Pusher Seal with Lubrication-enhancing and Controlled-leakage Features

48XP 180613 HD

Patented John Crane Laserface® interface groove technology. The Type 48XPVL is a new and innovative technology which has been...

Type 5610/5610Q/5610L

Universal Cartridge Seal Family — Single Cartridge O-Ring Seal

5610 lg

The first truly universal cartridge seal, the Type 5610 will change your approach to sealing. Since the 5600 Series components...

Type 5610D/5620D

Universal Cartridge Seal Family — Wet/Dry-running Seal

Standard Cartridge 5620

The specially engineered, fully interchangeable wet/dry-running seal head extends the functionality of the 5600 product line for standard ANSI...

Type 5610V/VQ/VP

Universal Cartridge Ear Drive O-Ring Seal Head

5610V_VQ_VP

The specially engineered, fully interchangeable ear drive O-ring seal head extends the functionality of the 5600 series product line for standard ANSI and large bore…

Type 5620/5620P

Universal Cartridge Seal Family — Dual Cartridge O-ring Seal

Standard Cartridge 5620

The first truly universal cartridge seal, the Type 5620/5620P will change your approach to sealing. Since the 5600 Series components...

Type 586

Heavy-duty Cartridge Seal for Flue Gas Desulphurization

586 sm

The Type 586 is a single, stationary cartridge-mounted seal assembly designed to contain the thick, corrosive and erosive slurries typically...

Type 58B

General Purpose DIN Balanced, Multi-spring, O-ring Pusher Seal

A DIN seal for general- and high-pressure duties in the processing, refinery and petrochemical industries. Alternative...

Type 58U

General Purpose DIN, Multi-spring, O-ring Pusher Seal

A DIN seal for general low- to medium-pressure duties in the processing, refinery and petrochemical industries. Alternative...

Type 8610

Balanced Stationary Multi-spring Single Mechanical Seal

8600 lg

The seal is suited to a whole host of offshore, refinery and process industry duties. Its robust construction and proven...

Type 8620

Balanced Stationary Multi-spring Dual Mechanical Seal

8600 lg

The seal is suited to a whole host of offshore, refinery and process industry duties. Its robust construction and proven...

Type FFET

Single Cartridge O-ring Seal

FFET lg

Designed to reduce installation time and errors, the compactness of the FFET cartridge seal ensures that it will fit all ANSI...

Type JCS1

Integrated Single Seal for Demanding Conditions

Safeseal JCS1 is a rugged, pump-integrated single seal designed for clean and lubricating fluids such as water, oils, solvents and...

Type JCS2

Integrated Double Mechanical Seal for Demanding Conditions

JCS2P Sulzer 1

Type JCS2 seals are designed to be used in pumps for environmentally hazardous and abrasive liquids when operating limits for...

Type R33

General Purpose Short (L1S) DIN O-ring Pusher Seal

r33

A short DIN seal for general duties in the processing, refinery and petrochemical industries. Alternative seat designs and material options...

Type RRAL/RREL

Balanced Single-spring Cartridge Seals for Refinery and General Oil and Gas Service

RREL lg

Patented single-spring drive to minimize clogging. RRAL/R is an API 682 qualified cartridge design....

Type RREP

High-performance Multi-spring Seal

RREP lg

Designed for high-pressure and high-speed applications, the RREP is suited to a whole host of refinery and process industry duties,...

Type SAF

Double-acting Cartridge Seal for Heavy Equipment

SAF

The SAF is a double-acting seal particularly engineered to suit pumps, screens, knotters, sorters and pulpers in heavy process industries...

Type SB1

Single, Heavy-duty Cartridge Seals

SB1A V3

The Safeseal Type SB1 is a single-cartridge seal for use with clean fluids and lubricants. It is versatile and...

Type SB1A

Single, Heavy-duty Cartridge Seals

SB1A V3

The Safeseal Type SB1A is a single-cartridge seal for use with clean fluids and lubricants. It is versatile, easy...

Type SB2

Heavy-duty Dual-cartridge Seals

The Safeseal Type SB2 is a dual-cartridge seal. Its double-balanced design ensures the reliability and longevity of the...

Type SB2A

Heavy-duty Dual-cartridge Seals

The Safeseal Type SB2A is a dual-cartridge seal. Its double-balanced design ensures the reliability and longevity of the seal...

Type SBW

Heavy-duty Single-cartridge Seals with Non-pressurized Quench

The Safeseal Type SBW is a single-cartridge seal used with unpressurized quench. The Type SBW seal can be used...

Type SE1

Single Mechanical Seals for Sulzer Process Pumps

SE1 V4

The Safeseal Type SE1 is a customer-fitted (OEM standard) single, balanced component or cartridge seal designed for clean and lubricating...

Type SE2

Dual Mechanical Seals for Sulzer Process Pumps

SE2 V3

The Safeseal Type SE2 is a customer-fitted (OEM standard) dual, balanced cartridge seal designed for the severe applications found in...

Type SEW

Single Mechanical Seals for Sulzer Process Pumps

SEW V3

Type SEW is a seal operating on a non-pressurized water quench principle. It is designed for the most demanding applications in...

Type U2EK

General Purpose Short (L1S) DIN O-ring Pusher Seal

A short DIN seal for general duties in the processing, refinery and petrochmical industries. Alternative seat designs and material options...

Type 10R

PTFE Bellows Seal for Extreme Corrosion Resistance

10R lg

A complete externally mounted PTFE seal with exchangeable face insert for use in extremely corrosive applications such as high concentrations...

Type 10T

PTFE Bellows Seal for Extreme Corrosion Resistance

A complete externally mounted PTFE seal with bellow integrated PTFE face for use in extremely corrosive applications such as high...

Type 20/20R

Chemically Inert Materials In All Areas and On All Surfaces

20 20R

Types 20 and 20R shaft seals feature chemically inert materials in all areas and on all surfaces in contact with...

Type 109

Shaft-mounted Multi-spring Wedge Seal

A wedge seal for use on corrosive applications, typically for chemical or hydrocarbon processing....

Type 109B

Balanced Shaft-mounted Multi-spring Wedge Seal

A balanced wedge seal for use on corrosive applications, typically for chemical or hydrocarbon processing....

Type 59B

General Purpose DIN, Balanced, Multi-spring, PTFE Wedge Seal

59B lg

A DIN seal for general and high-pressure duties in the chemical, refinery, petrochemical and pharmaceutical industries. Alternative seat designs and...

Type 59U

General Purpose DIN, Multi-spring, PTFE Wedge Seal

59U lg

A DIN seal for general low- to medium-pressure duties in the chemical, refinery, petrochemical and pharmaceutical industries. Alternative seat...

Type 5840

Cost-effective Cartridge Slurry Seal

Slurry Seal 5840 lg

Our Type 5840 single-cartridge seal encompasses many of the advantages associated with heavy-duty seal design, encased in a cost-effective...

Type 5860

Heavy-duty Cartridge Slurry Seal

5860 lg

Available as a single or double seal, the Type 5860 is designed to operate in the harshest abrasive slurry environments....

Type 5870

Flushless Cartridge Seal

5870 lg

The Type 5870 is a single, balanced, O-ring pusher cartridge seal. It is designed to operate unsupported in all paper...

Type 3740

Advanced Design, Wet-running Cartridge O-ring Split Seal

IMG1628

The Type 3740 mechanical seal is a family of split seals using the latest modular split seal technology from John Crane that...

Type 3740D

Dry Running Cartridge Split Seal

IMG1628

The Type 3740D dry-running split seal is a mechanical seal designed for the large shaft run-out and harsh operating conditions commonly associated with top-entry vessel…

Type 3740XL

Extra Large Wet Running Cartridge Split Seal

The Type 3740XL wet-running split seal is the extra large version of John Crane's successful Type 3740 split seal...

Type 75FS

Dry-running Fully Split Mixer Seal

75fs lg

The Type 75FS dry- or wet-running fully split mechanical seal is designed specifically to eliminate process contamination and significantly reduce...

Type 37FS

Heavy-duty Split Elastomer Bellows Seal for Agitators, Mixers and Pumps

37FS lg

The Type 37FS fully split mechanical seal helps significantly reduce maintenance on larger, difficult-to-seal equipment. It is recommended for use on...

Type 37FSB

Heavy-duty Balanced Split Elastomer Bellows Seal for Agitators, Mixers and Pumps

The Type 37FSB fully split mechanical seal helps significantly reduce maintenance on larger, difficult-to-seal equipment. It is recommended for use on...

Type 73

Inflatable Backup Shaft Seal to Accompany Split Seal

73 lg

Our inflatable backup seal is primarily used to hold process fluids, without leakage, while repairs are made to the primary...

Type 32

Single Dry-running Mixer and Agitator Seal

Type 32

The cost-efficient Type 32 vessel seal is an outside-mounted balanced single-component seal with self-lubricating seal faces. Neither external cooling...

Type 32D

Single Dry-running Mixer and Agitator Seal Suitable for Explosive Atmospheres

Type 32D

Type 32 D vessel seals are outside-mounted, balanced single seals with self-lubricating seal faces. Neither external cooling, lubrication equipment nor...

Type 32i

Single Dry-running Mixer and Agitator Seal with Novel Noise-reduction Technology

Please see Type 32 product description for technical information of the Type 32 seal family. In contrast to Type 32,...

Type 5280 (W, D, G, GD)

Modular, High-performance, Hygienic Design Agitator Seal for Steel Vessels

Type 5280 vessel and agitator seal

Type 5280 vessel seals apply Qualified Hygienic Design (QHD) and GMP standards and guidelines to enable the cleaning and sterilization of the product...

Type 5281 (W, D, G, GD)

Modular, High-performance, Hygienic Design Agitator Seal for Glass-lined Vessels

Type 5280 vessel and agitator seal

Type 5281 is part of the 5280 hygienic vessel seal family. Please find general technical and hygienic design features of...

Type 5282 (W, D, G, GD)

Modular, High-performance, Hygienic Design Agitator Seal for Special Alloy Vessels

Type 5280 vessel and agitator seal

Type 5282 is part of the 5280 hygienic vessel seal family. Please find general technical and hygienic design features of...

Type 7700

Modular Wet or Dry Running Face-to-Face Cartridge Seal for Mixer and Agitator Applications

Type 7700

The heavy-duty Type 7700 is design-specific to serve critically important vessels in batch or continuous processes.

Type 7828 (G, GD)

Modular Gas-lubricated Cartridge Seal for Mixer and Agitator Applications

Type 7828G GD

Type 7828 is part of the 7800 Vessel Seal Family. The 7800 family consists of heavy-duty, dual-pressurized, back-to-back, pusher...

Type 7848 (W, D)

Modular Wet- or Dry-running Cartridge Seal for Mixer and Agitator Applications

Type 7848 DVHL

Type 7848 is part of the 7800 Vessel Seal family. The 7800 family consists of heavy-duty, dual-pressurized, back-to-back, pusher...

Type CK 725 (D)

Mixer and Agitator Cartridge Seal to Vessel Seal Standard DIN 28138 for Steel Chemical Reaction Vessels — No Bearing Integrated

Type CK 725 Photo

The Type CK 725 is a dual-pressurized liquid lubricated cartridge seal for top-entry mixing and agitating equipment. A value...

Type CK 726 (D)

Mixer and Agitator Cartridge Seal to Vessel Seal Standard DIN 28138 for Steel Chemical Reaction Vessels — with Integrated Bearing

Type CK 726

The Type CK 726 is a dual, pressurized, liquid-lubricated cartridge seal for top-entry mixing and agitating equipment. An integrated...

Type CK 728 (W, D, G, GD)

High-performance Modular Mixer and Agitator Seal for Steel Chemical Reaction Vessels — Standard Solutions Comply to Vessel Seal Standard DIN 28138

Type CK 728

Type CK 728 is a versatile, high-performance cartridge seal solution for steel vessels applicable in various industries, including high-purity pharmaceutical...

Type CK 736 (D)

Mixer and Agitator Cartridge Seal to Vessel Seal Standard DIN 28138 for Glass-lined Chemical Reaction Vessel — with Integrated Bearing

Type CK 736

The Type CK 736 is a dual-pressurized, liquid-lubricated cartridge seal for glass-lined mixing and agitating equipment with top-entry...

Type CK 738 (W, D, G, GD)

High-performance Modular Mixer and Agitator Cartridge Seal for Glass-lined Chemical Reaction Vessels — Standard Solutions Comply to Vessel Seal Standard DIN 28138

Type CK 738

Type CK 738 is a versatile, high-performance cartridge seal solution for glass-lined vessels applicable in various industries, including high-purity pharmaceutical...

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