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C831 O Ring

C831 O Ring

A standard grade FKM co-polymer compound, based on Genuine Viton ® with a broad chemical resistance and good compression set values, suitable for high pressure sealing applications. Use with a wide range of chemicals, hydrocarbons at high temperatures, covalent or non polar solvents, fluid power and High Pressure Applications.  The compound is ADI, Reach & RoHS compliant.


This product is supplied Degassed.  Degassing is a process where a Rubber Viton Seal is placed in a Vacuum Oven at 180 ° C for a number of hours to remove all impurities including vapour, grease and finger marks. It is then bagged and sealed remain vapour free and clean for a minimum of 6 months.  This process vastly improves sealing abilities.

100% Modulus
9 MPA
100% Modulus
9 MPA
Compression Set
20 %
Compression Set
20 %
Elongation at Break
120 %
Elongation at Break
120 %
Heat Ageing - Change in Elongation @ Break
-7 %
Heat Ageing - Change in Elongation @ Break
-7 %
Heat Ageing - Change in Hardness
+3 ° Shore
Heat Ageing - Change in Hardness
+3 ° Shore
Heat Ageing - Change in Tensile Strength
+5 %
Heat Ageing - Change in Tensile Strength
+5 %
IRM 903 Oil - Change in Elongation @ Break
-2 %
IRM 903 Oil - Change in Elongation @ Break
-2 %
IRM 903 Oil - Change in Tensile Strength
-17 %
IRM 903 Oil - Change in Tensile Strength
-17 %
IRM 903 Oil Change in Hardness
-1 ° Shore
IRM 903 Oil Change in Hardness
-1 ° Shore
Oil Swell IRM903
1.4 %
Oil Swell IRM903
1.4 %
Shore Hardness(IRHD)
88 +/-5 ° Shore
Shore Hardness(IRHD)
88 +/-5 ° Shore
Tensile Strength
12 MPA
Tensile Strength
12 MPA
PURPOSES
Chemical Resistant
High Working Temperature
Oil Resistance
Made in the UK
REACH Compliant