Low temperature resistant silicone rubber O-rings -> PERFORMANCE:

 

(Silicone Rubber) low temperature resistant silicone rubber O-ring backbone of silicon (-si-o-si) a combination. It has excellent heat resistance, cold resistance, ozone resistance, resistance to atmospheric aging. It has good electrical insulation properties. After modulation formula tensile strength and tear resistance of up to up to 1500PSI 88LBS, good resilience and good compressive force, neutral solvent has good resistance, with excellent heat resistance, cold resistance, for ozone and oxide erosion has excellent resistance, excellent electrical insulation properties, thermal insulation, good heat dissipation.

Low temperature resistant silicone rubber O-ring as a main chain containing silicon and oxygen atoms of special rubber, which play a major role in the silicon element. Its main characteristic is both high temperature (up to 300 ?) and low temperature (lowest -100 ?), is the best Alto Ai cold, high temperature rubber; at the same time excellent electrical insulation, high stability against thermal oxidation and ozone , large chemical inertness. Operating temperature: -60 ? ~ + 250 ?.

 

Select the rubber O-ring, working conditions must be considered in order to select the appropriate form and material, the mounting structure of the rubber O-ring. To consider working conditions generally include: temperature, pressure, medium.

 

On temperature, material such as NBR operating temperature range is generally -40 ~ + 120 ?. That exceeds 120 ? will consider FKM, and even the PTFE material. Low temperatures relatively rare, in general, in the case of -20 ~ -40 ? may consider the use of low temperature resistant silicone rubber O-rings can be used in cold northern places such as railway locomotives.

 

As for the pressure, the impact they want to choose the form of the seal. In general, low pressure in the selection of rubber or PU sealing pressure will not be a big problem. But to consider the impact of a pressure, such as construction machinery start, shut down when its impact is much larger than the normal working pressure of the pressure, so often the choice of pressure up to 70Mpa impact resistance to collapse or SPGW to do the main gap HBY seal. PTFE seal combination is a common choice.