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Explanations: Rubber Properties/Test Methods |
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Hardness: Measured normally as Shore A or IRH D. Both methods are based on the penetration of a needle into a rubber surface. The less the penetration is, the harder the rubber is.Tensile Strength: the force needed to break a piece of rubber, Measured in force/cross area unit
Elongation at break: How much a rubber can be stretched until breaking. Measured in % of original length. Tear strength: How much force is needed to break a rubber sample with a specified crack. Measured in force per thickness.
Compression set: The idea of measuring the compression set is that the lower the compression set is, the higher the sealing force is. It is measured in % of the deformation. Heat Resistance/Heat Ageing: is measured through measuring the change in various mechanical properties.
Chemical Resistance: Is measured through measuring the change in volume, weight, and various properties. Low temperature resistance: Is measured either through compression set of tensile retraction test, which is a test or elasticity at low temperature.
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