Viton® O-Ring and seal performance cost benefit makes it the second most popular sealing material. Fluoroelastomer (Viton®, FKM) offers a wide range of resistance to chemicals, oil and heat, with situational service life above 200°C. The outstanding heat stability and excellent resistances are due to the high ratio of fluorine to hydrogen, the strength of the carbon-fluorine bond, and the absence of unsaturation. FKM compounds are widely used in chemical, automotive, aerospace and industrial applications. Fluoroelastomers are referred to generically as FKM polymers per the nomenclature noted in ASTM D1418. In the SAE J200 ASTM D2000 classification system for rubber materials Fluoroelastomers are documented as a "HK".
common names:FKM, FPM (Europe), Fluoropolymer, Fluoroelastomer. Trade Names: Viton®, Fluorel®.
features:
Situational service life above 200°C
Excellent resistance to acids, fuels, mineral and vegetable oils and greases, aliphatic, aromatic and chlorinated hydrocarbons, non-flammable hydraulic fluids (HFD) and many organic solvents and chemicals.
Excellent resistance to aging and ozone.
Low gas permeability, low compression set.
work temperature : -50ºC to 250ºC
colour:green,blue,black, brown, etc
Ningbo famedo sealing products co.,ltd supply and customize quality Viton/FPM/FKM/FFKM extrusion,o ring cords, O RINGS, O RING KITS, rubber-metal bonded washers,piston rod seals, cylinder seals, back up rings, dust seals, wear rings, PTFE copper/bronze filled/graphite filled/glass fiber filled /molybdenum disulfide filled guide rings, POM/nylon/phenolic fabric guide rings, PTFE molded/turning products,rubber molded accessories, silicon rubber food grade environmental protection molded products&extrusion;gland packings,spiral wound gaskets, graphite products, automobile accessories, fireproof and waterproof cloth, rubber&plastic and metal moulds design.etc
standard size of VITON o  cords which cut in to o rings :
1/8"; 1/4"; 3/16";3/8"; 1/2"; 5/8"; 3/4"; 7/8"; 1";1 1/8";1 1/4"; 1 1/2";2" etc
square section is available
colour : brown,; gree; black
hardness: 80A shore or customise