Mechanical Seals, Power Couplings, Services and More for Refrigerator Compression Systems | John Crane
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Refrigeration Compression

From oil refineries to petrochemical plants, many mission-critical operations require refrigeration for temperature-specific processes. As crucial as refrigeration compressing is to these applications, it is essential that every compressor seal and coupling maintains optimal performance and reliability. With John Crane products, customers can not only achieve maximum efficiency in low-temperature applications; they can also reduce energy consumption and meet strict environmental standards for hazardous materials such as industrial refrigerants.

Refrigeration Compression Components

John Crane compressor seals and metal bellows seals, among others, are designed to meet the demands of today’s refrigerants and prevent leakage in accordance with stringent industry standards. We have a wide range of products specific to the refrigeration industry, including: 

Elastomer Bellows Seals

Type 2: Multi-purpose, non-pusher elastomer bellows seal available in single, double and balanced arrangements

Seal Support Systems

GR1/1C: General duty reservoir that can withstand pressure up to 16.3 bar while providing buffer/barrier fluid to a dual-seal arrangement

GR2/2C: General duty reservoir that can withstand pressure up to 30 bar while providing buffer/barrier fluid to a dual-seal arrangement

GR3/3C: General duty reservoir that can withstand pressure up to 73 bar (stainless steel) or 62 bar (carbon steel) while providing buffer/barrier fluid to a dual-seal arrangement

GP-S/GP-D: Non-API gas control panel for filtering, regulating and monitoring gas supply to gas-lubricated pump seals

Cyclone Separators: Typically used in an API Plan 31 arrangement and incorporated in the seal flush line (API Plan 11 ) from the discharge of the pump

Safeunit™ Ultima: Specially designed to control seal water flow and pressure in extreme conditions

Safeclean: Removes impurities and particles, providing clean seal water for stuffing boxes and mechanical seals

Power Transmission Couplings

L Series: Designed for demanding industrial applications with a scalloped hub for the shaft

T Series: Cartridge design allows for easy fit on-site and maximum reliability

Filtration Systems

Liquid Filtration: Filters designed for almost any liquid application, from lubrication, hydraulic or bearing oil systems to water injection systems

Seal Gas Filtration: Removes liquid and particle contamination to allow continuous supply of clean, dry gas

Fuel Gas Filtration: Individually tailored for maximum reliability, regardless of the condition of the supply gas

Fuel Oil Filtration: Patented elements that remove water and particle contamination for maximum reliability

Double 3-way and 6-way Transfer Valves: Provides continuous operation while one side receives maintenance

Filter Elements: Patented design for maximum performance and running time between change outs

Refrigeration Compression Services

In addition to the support and repair provided by our 200+ global rapid-response facilities, John Crane also offers a range of services designed to help improve reliability and reduce total cost of ownership:

Equipment Service

John Crane Equipment Service assists with critical systems checks and plant equipment maintenance as well as repair, removal and reinstallation services.

Reliability Support

John Crane Reliability Support services assess equipment reliability and performance, analyze root cause failures and recommend strategies for improvement.

Asset Management

John Crane Asset Management software offers customers a holistic view of their current systems to help spot unleveraged opportunities.


John Crane provides a wide range of training courses that cover the correct procedures for installing, operating and maintaining equipment components.