Is Kalrez the same as FFKM?

Perfluoroelastomers (FFKM) are best known as DuPontTM Kalrez, although other grades do exist. The compounds contain fully fluorinated polymer chains and hence offer the ultimate performance of elastomers when considering heat and chemical resistance.

What kind of material is Kalrez?

It is a carbon black filled product with excellent chemical resistance, good mechanical properties, and outstanding hot air aging properties. It exhibits low swell in organic acids, inorganic acids and aldehydes, and has good response to temperature cycling effects.

Is Kalrez the same as Viton?

The name Kalrez® is a trademark of Dupont. The material is actually an improved version of Viton with 20% more fluorine in the chains, making it an extremely expensive per fluorocarbon elastomer.

What is difference between FKM and FFKM?

FFKM, or perfluoroelastomer, contains higher amounts of fluorine than standard FKM, and features higher temperature ratings, up to approximately 325°C. FFKM also has improved chemical resistance, with nearly universal chemical compatibility.

What is the difference between Kalrez® and FFKM?

The Kalrez® O-ring exhibits less volume swell in trisolvent test Kalrez® perfluoroelastomer (FFKM) parts withstand attack from more than 1,800 chemicals, solvents and plasmas. The Kalrez® product line delivers outstanding performance in aggressive process environments.

Why Kalrez perfluoroelastomers?

Kalrez has outstanding chemical resistance, it withstands nearly all classes of chemicals. With this combination of high thermal stability and excellent chemical resistance, the Kalrez perfluoroelastomer parts rating may be conservative, as actual field experience and the example above have demonstrated.

What is the difference between Kalrez and PTFE?

• Compared with PTFE seals, KALREZ is not likely to creep or cold flow. Chemical Resistance KALREZ has excellent chemical resistance, far above that of other commercial elastomers.

Why choose Kalrez seals?

• Compared with metal seals, KALREZ is easily installed and conforms to the sealing surface despite irregularities due to improper assembly or wear. • Compared with PTFE seals, KALREZ is not likely to creep or cold flow. Chemical Resistance KALREZ has excellent chemical resistance, far above that of other commercial elastomers.