Perlast® G75B

Perlast® G75B – Multi-Purpose FFKM Solution

Perlast® G75B is one of the Perlast® Super-Six range of outstanding FFKM compounds. It has been specially formulated to offer a distinctive combination of exceptional chemical resistance, mechanical strength, and high-temperature stability, simultaneously broadening the operational boundaries in all these aspects.

Perlast® G75B enhances acid resistance by removing fillers vulnerable to acid attacks and refining the polymer structure. With low permeability, it resists swelling, ensuring prolonged performance in demanding environments such as valves, pumps, and mechanical seals.

Its high modulus prevents extrusion, making it suitable for medium to high-pressure applications. Moreover, its low cumulative compression set ensures longer maintenance intervals in hot, chemically aggressive settings. Perlast® G75B accommodates both dynamic and static applications, capable of being molded into O Rings (up to 2m/6.5ft internal diameter) and customised shapes with ease.

The below diagram is a visual representation of the Perlast® G75B material:

Key Features:

• Excellent chemical resistance to a wide range of chemicals.
• Exceptional acid and amine resistance.
• Superior mechanical properties.
• Long-term sealing efficiency at high temperature.
• Extremely low out-gassing properties.
• Good steam resistance (ASME BPE 2000).
• Less than 2% swell in MIL-L-23699C jet oil after 336 hours at 200°C.

Applications by Industry:

Aerospace & Defence – Inter-stage seal assemblies (static O Rings).

Chemical Processing – Pumps, valves, mechanical seals.

Diesel – Pre-heat chambers, exhaust valve seats.

Semiconductor – Gas abatement systems (static), high-temperature environments.

Oil & Gas – High-temperature down-hole environments, electrical bulkhead feed-throughs.

We also offer a comprehensive range of other quality High-Tempertaure Seals.

If you would like more information about the Perlast® range contact a member of the team.

M Barnwell Services is one of the UK’s largest independent manufacturers, stockists, and distributors of Oil and Gas fluid sealing products. We also have a full range of specific Oil and Gas FFKM (Perfluoroelastomer) O Rings, Lip Energised Seals, Spring Seals, V-Packings and Chevron Stacks, and T Seals.