Which pipeline seal is right for you?
At John Crane, we understand the importance of pipeline integrity. A seal failure not only means production losses up to millions of dollars per day, but could also lead to long-term environmental consequences. If you are unsure which sealing solution is the best fit for your pipeline, the questions below will help you.
Pipeline Seal Solutions
Type 8648VRS Single Seal
- Unique patented secondary seal technology prevents wear to the sealing diameter and prevents secondary seal hang-up
- For crude oil applications, hard (silicon carbide) faces are standard to handle higher viscosity fluids and high torque application and for abrasive wear resistance
- Premium seal face materials permit sealing of difficult services at high operating pressures
- Alternative materials are available for light and flashing hydrocarbons
Type 8648VRS Dual-pressurized Seal
- Unique patented secondary seal technology prevents wear to the sealing diameter and prevents secondary seal hang-up
- Static reverse pressure capability on the inboard seal
- Premium seal face materials permit sealing of difficult services at high operating pressures
- Hard faces are standard to handle higher viscosity fluids and high torque application, as well as abrasive wear resistance
Type 8628VSC Non-contacting Secondary Containment Seal
- Non-contacting seal used in tandem with Type 8648VRS and incorporated into a cartridge
- In response to primary seal leakage, or in the event of a failure, this seal provides containment and directs process flow to flare or drain
- Can be used without a seal system or in conjunction with a simple API plan to detect any excessive leakage from the primary seal
Type 8648SC Dry-running Secondary Containment Seal
- Dry-running containment seal used in tandem with Type 8648VRS and incorporated into a cartridge
- In response to primary seal leakage, or in the event of a failure, this seal provides containment and directs process flow to flare or drain
- Can be used without a seal system or in conjunction with a simple API plan to detect any excessive leakage from the primary seal
SCB API Plan 66A Secondary Containment Device
- Used as back-up to the Type 8648VRS Single Seal and incorporated into the cartridge
- Standardized dual-bushing secondary containment device
- Arrangement intended for use in conjunction with API Plan 66A
Liquid Filtration Solutions
- Filters can be applied to almost any liquid application
- Filters in duplex configuration to ensure adequate, uninterrupted filtration of the process flow when changing the filter element
- Patented elements remove particle contamination and maximize reliable operation of the machine
Seal Support Systems
- API Plan P53B: An accumulator-based seal support system that utilizes a bladder to maintain system pressure to a dual-pressurized seal
- API Plan P54/P55—Provides a positive flow and pressure of barrier fluid to a dual-pressurized seal
- API Plan 54/P55 is typically preferred where flow and heat removal capacity exceed that of API Plan 53B
T-Series Metastream Membrane Disc Couplings
- Membrane (disc) couplings, incorporating stainless steel scalloped membranes, with metric or imperial flange hardware
- Specially designed to meet API 610 (ISO 13709) and ISO 14691 standards
- Center unit replacement is quick and easy to maximise your equipment running time
- Fit-and-forget reliability
Additional Content
Keep your pipeline operations running smoothly
Liquid Hydrocarbon Pipeline Products
Showing 1–4 of 4 products
Type 8648VRS
Single and Dual Non-pusher Elastomer Seal
Type 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…
Type 8628VSC
Non-pusher Secondary Containment Seal
Type 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…
Secondary Containment Bushing
Secondary Containment Device for Plan 66A Crude-oil Pipeline Applications
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 Type 8648SC is a standardized non-pusher elastomer, dry running, secondary containment seal designed specifically for non-crude oil hydrocarbon services, with a focus…