Silicone rubber material properties

Characteristics Item Unit Numeric value
Properties in normal state Hardness, durometer - A50S
Tensile strength MPa 7
Elongation 300
Heat resistance
(225℃ 70 hrs.)
Change in hardness Hs -3
Rate of change in tensile strength -
Rate of change in elongation -25
Permanent strain (150℃ 22 hrs.) 30
Oil resistance
(150℃ 70 hrs.) JIS No. 3 oil
Change in hardness Hs -12
Rate of change in volume 34
Ozone resistance(Stationary test method) (50 pphm, 40℃, 20% elongation) - 200
No cracking

Note: The numeric values above are typical values. They are not standard values.