What is the difference between FFKM and FKM?
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.
Is FFKM FDA approved?
Developed for food and pharmaceutical processing, automated CIP and SIP systems and is FDA compliant to 21 CFR 177.2600.
Is FFKM a Teflon?
Fluoroelastomer (FKM) rubber is a thermoset elastomer while Polytetrafluoroethylene (PTFE) is a thermoplastic. Both are fluorinated materials comprising of carbon atoms surrounded by fluorine atoms, which gives them incredible chemical resistance.
What is Kalrez material?
Chemical Processing. Kalrez® 1050LF is a carbon black-filled product for O-rings, seals, and other parts used in chemical process industries. It has good hot water/steam, and excellent amine resistance.
What is FFKM material?
Perfluoroelastomers (FFKM) are the elastomeric form of poly(tetrafluoro ethylene) or PTFE. These elastomers have a fully fluorinated backbone. They are copolymers of tetrafluoroethylene and a perfluorinated ether such as perfluoromethylvinylether (PMVE).
Is FFKM the same as Viton?
Fluoro-Elastomer is usually referred to as FKM FPM or as VITON™ after the popular brand which produces it. You may see this rubber listed in different places with these different names, but they are all one and the same. Originally developed by Du Pont, it is produced by a number of companies around the world.
Is all EPDM food grade?
White FDA approved EPDM rubber is typically used for general gaskets commonly used in food processing operations. BRP’s white FDA approved EPDM rubber complies with all of the FDA standards set forth by CFR 177.2600 Title 21. To ensure the highest safety, the FDA sets strict standards for the food processing industry.
What is the difference between Kalrez and 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 does FFKM mean?
Perfluoroelastomers
Perfluoroelastomers (FFKM) are the elastomeric form of poly(tetrafluoro ethylene) or PTFE. These elastomers have a fully fluorinated backbone. They are copolymers of tetrafluoroethylene and a perfluorinated ether such as perfluoromethylvinylether (PMVE).
How is FFKM made?
FFKM is made up of 72.5% fluorine with a fully fluorinated backbone chain, which is the absolute maximum level of fluorination possible whilst still retaining the elastomeric properties needed for the development of high performance ‘O’ rings.
What is an FKM O ring?
This rubber is used in applications that need O-rings that are resistant to high temperatures and chemical attacks. The FPM/FKM Viton® sealing rings are often used aircraft, automobile and other mechanical devices requiring maximum resistance to elevated temperatures and to many fluids, or other media.
What is FFKM made of?
As with all elastomers, FFKM is normally compounded with fillers, colorants, processing aids, and crosslinking systems.Typical fillers include carbon black, and mineral fillers such as silica.
What is the thermo-chemical resistance of FFKM materials?
As all of the bonds on the backbone are carbon-fluorine then FFKM materials offer the ultimate thermo-chemical resistance shown by the good long-term high temperature compression-set resistance. This is demonstrated by the good longterm, high-temperature, compressionset resistance.
What is the CSM of FFKM?
The CSM can then react to form a three-dimensional network. The most significant CSM for FFKMs are cyano-functionalvinyl ethers. The major advantages of using these CSMs are that they can be effectively cured using a variety of curatives.
What is the difference between FFKM and FFKM?
If the backbone is fully fluorinated, it is a perfluoroelastomer (FFKM); if it is partially fluorinated, it is a fluoroelastomer (FKM). The polymer backbone comprises many repeating monomerunits.
