This black SBR contains one or two synthetic fabric layers, which makes it long lasting and more resistant than the 3R 820.
Featuring a high tensile strength, it is very useful to make flange gaskets for hot water, cold water and low pressure steam piping.
The 3R825 is recommended for gasket applications up to 300 psi.
|Polymer Type||Cloth inserted SBR rubber|
|Hardness (Shore A) ± 5||80|
|Temperature||-25°C to 80°C (-10°F to 180°F)|
|Tensile Strength, lbs/in²||500|
|Elongation minimum, %||100|
|Impermeability to Gases||Fair|
|Resistance to Dilute Acid||Poor|
|Resistance to aromatic hydro-carbons||Poor|