Features and Performance

The FKM elastomers (or FPM for ISO standard) are part of the family of fluorinated polymers. The performance of these products make them suitable in applications where the operation temperatures ranging from -25 ° C to + 225 ° C. In certain cases the functionality in static conditions is guaranteed even at temperatures below -45 ° C. The main applications are those of the electronics industry, aerospace, nuclear, military, automotive, marine and energy. All these O-Rings are present in our ORings Stock

Features and Performance

- Temperature range intermittent up to 250 ° C;
- Resistance to low temperatures from -20 ° C to -40 ° C with the use of special formulated (GLT);
- Flame resistance and usually self-extinguishing after removal; excellent resistance to oxygen, ozone resistant to atmospheric agents;
- Resistance to chemicals and solvents;
- Excellent resistance to hydrocarbons, aliphatic, aromatic and chlorine-containing substances;
- Good resistance to acids and alkalis including oxidants;
- Poor performance against ethers, ketones, and bases.

Variations and uses
Special FKM

Low temperature polymers (PLT and GLT) they are able to simultaneously satisfy low temperature flexibility, resistance to fluids with excellent mechanical characteristics. The fluorine content, depending on the type, ranges from 64 to 66.5%.

Peroxidic polymers (F and GF) respect to the vulcanizates types to bisphenol, match better mechanical properties and better chemical resistance especially steam and acids and particularly aggressive engine oils. The fluorine content, depending on the types, varies from 67 to 69.5%.

FKM standard
Special FKM

Cured copolymers to bisphenol (A) between the types of fluoroelastomer compounds is the most used since it combines the best compression set value with the chemical and thermal resistance and a good seal to -25 ° C. The fluorine content is 66%

Terpolymers vulcanised bisphenol (B) ensure, with respect to copolymers, better chemical resistance and low swelling petrols. The fluorine content, depending on the type, ranges from 67 to 69%.