Physical parameters silicone rubber seals

??Technical indicators physical parameters of rubber seals: tensile, elongation, flexibility, abrasion resistance, tear strength, impact strength, air tightness, resistance to oxidation, ozone resistance, resistance to sunlight, weathering, heat resistance, low temperature resistance, oil and gasoline , animal and vegetable oils, alcohol, lye, solvents, oils, acids, oxygenated solvents, water resistance.

??Physical properties of silicone rubber seals are not afraid of high temperatures and can withstand cold features, without losing the original strength and flexibility in Baidu and minus ninety degrees Celsius. Silicone rubber seals as well as good electrical insulation properties, resistance to oxygen aging resistance, light aging resistance and mildew resistance, chemical stability.

??Hardness silicone rubber seals can now be done SHOREA 0-90 degrees, or less commonly hardness 30-70 degrees, 30 degrees low hardness silicone, more than 70 degrees for the high hardness silicone.

??Tensile strength silicone rubber seals generally 10MPa or less, and more difficult to achieve 11, 12 is difficult to achieve. Generally gas phase precipitate than Silastic silicone rubber high tensile strength.

??Tear strength: common measure tear strength of a right-angle method and semicircle method, the two different test values, Cartesian method to test tear resistant silicone ships can reach the 50Kgf / cm, with a semicircle up 35Kgf test method / cm or more . High tear fumed silica is silicone rubber.

??Elongation silicone rubber seals generally decreases with increased hardness, elongation at break and thus low hardness silicone rubber to be higher, some up to more than 1000%, tensile elongation fumed silicone rubber long rates by titration with Shen silicone rubber hardness is higher.

??Silicone rubber seals lowest compression permanent deformation rate of 5% or less can be done, the parameters related to resilience, but not the same, which is an important parameter for the silicone rubber rollers, seals and other products concern.

??Silicone rubber seals rubber material is present in most varieties resistant to high temperature, low temperature resistance of minus 90 degrees Celsius, the temperature can reach 300 degrees Celsius or more. Ordinary silicone rubber Operating temperature range is generally between minus 40 degrees to plus 180 degrees. In fact many times a silicone rubber because of the advantages of its thermal properties have to be applied, such as in the winter cold areas, a number of pieces of rubber silicone rubber must be used for the job.