Rubber-Elastomers
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  RUBBER
Silicone (SI) and
Fluoroelastomer (CFM, FVSI, FPM, FKM)


 

SILICONE
Silicone rubber offers excellent resistance to the aging process, being unaffected by sunlight or ozone. For that reason it is often used in hot air. It has little mechanical resistance. It does not resist aliphatic and aromatic hydrocarbons or steam.


SERVICE LIMITS
Thickness
(Inches)
Width
(Inches)
Durometer
Hardness
Shore A 5
Tensile Elongation Temp Finish Specifications
1/16 thru 1/4 36 & 48 50 1080 350 -150 F to
500 F
Smooth ASTM D-2000
Mil-R-5847D
1/16 thru 1/4 36 & 48 60 1130 300 -150 F to 500 F Smooth ZZR-765-C,
Class IIA
& IIB;
AMS 3302
& AMS 3303



FLUOROELASTOMER
It is also known by its commercial name Viton (trademark of Du Pont). It offers excellent resistance to strong acids, oils, gasoline, chlorate solvents and aliphatic and aromatic hydrocarbons. Not recommended for use with aminos, esters, ketones and steam.


SERVICE LIMITS
Grade Thickness
(Inches)
Width
(Inches)
Durometer
Hardness
Shore A 5
Tensile Elongation Temp Specifications
A 1/16 thru 1/4 36 & 48 75 1650 165 -18 C to
204 C (400 F)
ASTM D-2000
2HK707B38E078Z
B 1/16 thru 1/4 36 & 48 75 1400 175 -18 C to
220 C (450 F)
ASTM D-2000
2HK707B38E078Z
B has better resistance and retains flexibility better after dry heat aging than A.
It is recommended for applications requiring maximum retention of elastic properties combined with good mechanical properties.

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Calgary, AB     
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