Tensile strength - also known as tensile strength or tensile strength, is the most important and basic performance index of rubber. The larger the value is, the better the performance of rubber is. The unit is MPa, and the tensile strength of rubber is usually greater than 5MPa (except conductive rubber).
Shore hardness - the ratio of the required load to its elastic modulus when a rigid sphere of a certain diameter is pressed into a rubber sample to a certain depth, that is, shore hardness. The shore hardness of rubber is generally 30-80 degrees. The lower the value is, the softer the rubber is.
Shore hardness, also known as shore (a) hardness, is the most direct characterization parameter of rubber. In the same kind of rubber, rubber with different hardness has different characteristics.
Compression set: after the rubber sealing ring (gasket) is released from compression, it does not return to its original uncompressed height, which is called compression set.
Tear strength refers to the tear resistance of rubber at the crack, expressed as the tear resistance per unit length, in kn / m. When silicone rubber is used for sealing, the tear strength shall be ≥ 25 kn / m.
Elongation (elongation at break) - refers to the percentage of the elongation part to the original length when the rubber sample is pulled. This index is used to express the elongation strain capacity of rubber. In%.
Aging resistance: rubber will be aged in the process of processing, storage and use. The factors causing aging include heat, light, ozone, biology, high energy radiation, flex fatigue, etc.
Cold resistance -- usually expressed as brittle temperature (℃), the lower the brittle temperature, the better the cold resistance.
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