FKM 75 British Metric O-Rings

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FKM material is the closest available approach to a universal elastomer for sealing in the use of o-rings and other custom seals over other types of elastomers. The Fluorocarbon o-ring is commonly referred to as a Viton o ring, or Fluorel, FKM, FPM o-rings. FKMs can be divided into different classes on the basis of either their chemical composition, their fluorine content or their crosslinking mechanism. The latest FKM polymers have a much broader fluids resistance profile than standard fluoroelastomers, and are able to withstand strong bases and ketones as well as aromatic hydrocarbons, oils, acids, and steam

Due to its excellent aging characteristics, fluorocarbon (FKM) rubber is the most significant elastomer developed recently. Fluorocarbon elastomers are highly fluorinated carbon-based polymers used in applications to resist harsh chemical and ozone attack.

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