What does FKM material mean?

What does FKM material mean?

FKM is the American standard ASTM short form name for Fluro-Elastomer. It is the designation for around 80% of Fluoro-Elastomers defined by ASTM D1418.

What are Perfluoroelastomers?

Perfluoroelastomers (FFKM) are the elastomeric form of poly(tetrafluoro ethylene) or PTFE. These elastomers have a fully fluorinated backbone. They are the most chemically resistant elastomers available on the market and have outstanding high temperature and chemical resistance.

What is the difference between Chemraz and Kalrez?

Chemraz and Kalrez are members of the perfluoroelastomer family. The effective temperature range for Kalrez is +5ºF to + 600ºF, for Chemraz –20ºF to +450ºF. A white Chemraz compound is available and features less impurities and less electrical conductivity.

Can Viton be black?

Generally speaking, a higher fluorine content brings higher chemical resistance; polymers with lower viscosity are great for extrusions and to help mold complex parts; and a variety of curing mechanisms highlight specific properties. Viton is a black rubber material ideal for O-Rings in high-temperature situations.

What is HiFluor FKM?

HiFluor is the Parker trade name for high performance fluoroelastomer materials that “bridge the gap” between traditional fluorocarbon (FKM) and perfluoroelastomer (FFKM) materials. This 65 durometer, low closure force fluoroelastomer is translucent in color and offers high purity and high performance.

What is FVMQ?

FVMQ (Fluorosilicone) combines the good high- and low-temperature properties of silicone with limited fuel and oil resistance. Fluorosilicones provide a much wider operational temperature range than Fluorocarbon rubbers.

What is kalrez6375?

Kalrez® 6375 is designed to give outstanding performance in the widest possible range of chemicals and temperatures. Mixed streams, once a problem for many chemical processors, can now be handled by 6375. The curing system also allows for a continuous upper service temperature of 275 °C (525 °F).

Is Viton the same as FKM?

These rubber compounds give exceptional heat resistance with compatibility across many fluids or chemical exposures. The most commonly known name for these compounds is “Viton,”™ which has become the generic name for all FKM polymers and rubber compounds.

What is FFKM (perfluoroelastomer)?

Perfluoroelastomer (FFKM) Material for O-Rings. The name “perfluoroelastomer” is somewhat misleading. An actual perfluorinated material with high molecular weight is polytetrafluoroethylene or PTFE which has the chemical formula (CF2)n. The molecular carbon chain is shielded by the chemical inertness of the large bonded fluorine atoms.

When to choose perfluoroelastomers?

When the highest service performance is needed, in terms of chemical and high temperature resistance, the choice is perfluoroelastomers. Introduction to Perfluoroelastomers – Part 1

Which perfluoroelastomer parts are most resistant to high temperatures?

A [cedilla] KalrezA perfluoroelastomer parts from DuPont Performance Elastomers, which provide excellent resistance to aggressive chemicals and high temperatures to help reduce the risk of unplanned maintenance. FFKM Perfluoroelastomer showed most resistance in CIP media, especially at elevated temperatures.

What is perfluoro-rubber used for?

It is mainly used where excellent thermal and chemical resistance are required. Perfluoro-rubber is the most expensive technical specialty elastomer. FFPM is available in a hardness range between 70 and 90 Shore A.