Engineering / Materials / FFKM/Kalrez

FFKM/Kalrez

FFKM/Kalrez® perfluoroelastomeric materials

Description:

FFKM rubber compounds have excellent resistance to high temperatures and chemicals. Certain grades have a maximum continuous service temperature of 327 °C (621 °F).

Common Uses:

They are commonly used to make o-rings and gaskets that are used in applications that involve contact with hydrocarbons or highly corrosive fluids, or when a wide range of temperatures are encountered.

Properties:

Standard Compound: -46°C (-51°F) to 327°C (620°F)

Special Compound (High temp): 327°C (257°F)

Hardness: 65 to 95 Shore A

ASTM D1418 Designation: FFKM

ASTM D2000 Designation:

Standard Colors: Black

Optional Colors: White, Clear Amber

Production:

FFKM are considered as a Type 3 FKMs composed of VDF, TFE, and perfluoromethylvinylether (PMVE). The addition of PMVE provides better low temperature flexibility compared to copolymers and terpolymers. Typically the fluorine content of type 3 FKMs ranges from 62 to 68 weight percent.

Advantages:

FFKM rubber compounds excel in these areas:

  • Excellent chemical resistance to most chemicals

  • The highest temperature resistant elastomeric material in the market

  • Can be molded into o-rings, x-rings, and a wide variety of custom shapes

  • Available in many different compounds and colors targeted for specific applications and markets

  • Compounds available to meet FDA, USP Class VI and Explosive Decompression Resistance requirements

Limitations:

FFKM rubber compounds are susceptible to molten alkali metals and dynamic applications.

Techno Ad is your comprehensive supplier for all sealing solutions
CONTACT US