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08

2021

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05

Silicone seal barrier performance and environmental performance

Because of its environmental protection and wide application temperature scale, silica gel seals can be used for a long time in the scale of -60 degrees to 200 degrees, so they are more and more widely used, such as waterproof sealing of daily necessities such as lunch boxes, water cups, electric rice cookers, water dispensers, heat preservation boxes, heat preservation boxes, ovens, coffee pots, etc. The seals can be heated at high strength temperature, no deformation, no harmful substances, good tensile performance, long-term use does not change yellow do not fade; Seals corona resistance, arc resistance, resistance to concave and convex temperature, aging resistance, good function, high temperature resistance.


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SiliconeSealBecause of its environmental protection and wide application temperature scale, it can be used for a long time in the scale of -60~200 degrees, so it is more and more widely used, such as waterproof sealing of daily necessities such as lunch boxes, water cups, electric rice cookers, drinking fountains, heat preservation boxes, ovens, coffee pots, etc. The seals can be heated at high strength temperature without deformation, harmful substances, good tensile performance, and will not fade after long use; seals corona resistance, arc resistance, resistance to concave and convex temperature, aging resistance function, high temperature function.

The seal has good heat resistance. The silicone seal ring can be used for a long time at 150 ℃, can be used for 10000 hours at 200 ℃, and can be used at 250 ℃. Silicone seals have good cold resistance. Generally, rubber is minus 20 ℃-30 ℃, while silicone seals still have good elasticity at minus 50 ℃-60 ℃. Some special low-temperature resistant silicone seals can also withstand lower temperatures. The wear of seals is also related to the roughness of sliding appearance. Rough appearance accelerates the wear of seals and is also related to processing methods, the wear of the seal on the polished shaft with the same roughness is much smaller than that of the polished shaft.

When the hydraulic cylinder operates under high pressure and low speed, it sometimes makes noise. The reason is that when the Y-shaped seal slides along the shaft or the inner wall of the cylinder, the rubber and the metal touch surface will adhere to the separation phenomenon for a short time, which will reduce the life of the sealing equipment, reduce the conflict coefficient of rubber, make the sealing touch surface stick to the lubricating oil film, and pay attention to the viscosity of the operation medium or lubricant not too low, construction machinery can not be separated from the cylinder, the cylinder can not be separated from the seal, the common seal is the seal ring, play the effect of blocking oil, to avoid oil overflow.


Key words:

Seal