FFKM O-Rings
(Common Trade names include Kalrez®, Chemraz®, Perlast® and other Perfluoroelastomers)
FFKM O-Rings – Maximum Chemical & Thermal Resistance for Extreme Applications
THE PROBLEM
Downtime
In industries like semiconductors, aerospace, and chemical processing, downtime from seal failures can cost millions per hour. Standard elastomers degrade under plasma, strong acids, solvents, or high-temperature sterilization — leading to contamination, leakage, and lost production.
OUR SOLUTION
Reliability
RMT supplies FFKM o-rings with near-universal chemical resistance and the ability to perform at temperatures up to 327°C. FFKM seals are the highest-performing elastomers available, making them essential for the world’s most demanding applications.
Industries and Applications

Semi Conductor
Plasma etching, deposition tools, wet process equipment.

Pharmaceuticals & Biotech
Cleanrooms, sterile processing, aggressive solvents.

Oil & Gas / Petrochemicals
High-temperature sealing, amines, acids, hydrocarbons.

Aerospace & Defense
Jet engines, hydraulic actuators, gearboxes, fuel systems.

Nuclear & Power Generation
Radiation and high-temperature resistant applications.

Automotive
High performance or critical automotive environments (Motorsport such as Formula 1)
We don’t just sell o-rings, we improve reliability!
Protect your operations with the highest-performing seals. Request a Seal Reliability Audit or quote for FFKM o-rings today.
Kalrez® is a Registered Trademark of DuPont
Chemraz® is a Registered Trademark of Greene, Tweed
Perlast® is a Registered Trademark of Precision Polymer Engineering Ltd
Related Services
Combine our sealing solutions with condition monitoring and vibration analysis to maximize equipment uptime.







