SEPARATION SEALS FOR COMPRESSOR PERFORMANCE
Separation seals
Overview
Based on more than 30 years of compressor sealing solutions, our separation mechanical seals are comprised of contacting bushings, non-contacting bushings and labyrinths. We also have coaxial separation seals.
Each separation seal meets the latest industrial standard API 692 and protects the dry gas seal from oil ingress, maintains sealing integrity in the event of a dry gas seal failure, reduces maintenance costs and improves reliability.
Explore our separation seal solutions
Type 93AX
Coaxial separation seal
John Crane’s Type 93AX is a next-generation coaxial separation seal engineered to deliver exceptional performance.
Type 93FR
Separation seal (non-contacting technology)
The Type 93FR is a non-contacting carbon bushing designed to protect dry gas seals from bearing oil ingress.
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....
Type 83
Separation seal (contacting technology)
The Type 83 is a dual-segmented carbon bushing assembly designed to prevent the migration of bearing oil to the dry gas seal cartridge....
IN MORE DETAIL
How does a separation seal work?
A separation seal works by creating a barrier between lubrication oil and the dry gas seal.
By preventing contamination, minimising wear and maintaining interface integrity in demanding environments, a separation seal ensures consistent performance and protects the dry gas seal from premature failure.
John Crane Performance Plus™
John Crane Performance Plus™ is our modular service framework, supported by the largest mechanical seal service network, with over 200 manufacturing, sales and service centres globally. That means we are where you need us, when you need us – empowering people, plant and performance.
WHY JOHN CRANE?
Why Choose John Crane Separation Seals?
John Crane separation seals are trusted for their proven reliability, precision engineering, and compliance with industry standards like API 692.
Designed to protect dry gas seals from oil ingress, reduce maintenance costs and maintain uptime in mission-critical compressors, our seals deliver consistent performance even in the most demanding environments. With decades of applied sealing expertise, John Crane provides solutions that enhance equipment life, minimise risk and support continuous operation.
Common questions
What is a separation seal?
A separation seal creates a protective barrier between lubrication oil and a dry gas seal. It prevents contamination, maintains sealing integrity and improves reliability in mission-critical compressors and turbomachinery.
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