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Fluorocarbon Square Ring
FKM, Viton®, V
Shore A Description:
The hardness of rubber compounds is measured by the Shore A durometer; the higher the durometer, the harder the compound. Softer compounds stretch easier and seal better on rough surfaces. Harder compounds offer greater abrasion resistance and resistance to extrusion.
60 Shore A is softer than 70
70 Shore A is the standard
90 Short A is very stiff
Specs:
Square rings are similar to o-rings however the cross-section is square instead of round. The square cross-section helps prevent rolling of the seal.
Color Compounds: Green, Brown, Black
Excellent resistance to petroleum products, low compression set and high temperature resistance. The low temperature capability is somewhat restricted, however, in some cases the low temperature sealing capability may be increased by specific design parameters.
Material:
FKM (Fluorocarbon)
Standard Service Temperature: -20°F - +400°F
Application:
Petroleum Fluids, Diester Lubricants, Silicone Fluids, Halogenated Hydrocarbons (Above 212°F), Some Acids, Selected Fluids.
Not Compatible With: Skydrol, Amines, Ketones, Hot Water, Steam, Brake Fluids