Sealing ring resistance to low temperature how much?

The degree of low temperature resistance of the sealing ring mainly depends on its material. Different materials of sealing rings, the adaptability to low temperatures is also different. The following are the low temperature ranges of some common sealing ring materials:

1. Ordinary rubber sealing ring: the general low temperature resistance range is -40 ° C to -20 ° C, depending on the type and formula of rubber. However, it is also said that the low temperature resistance of ordinary rubber seals can reach -40 ° C to 120 ° C.

2. Silicone sealing ring: good cold resistance, generally at -50 ° C to 60 ° C still has good elasticity. Some special cryogenic silicone seals can also withstand lower temperatures.

3.Nitrile butadiene rubber (NBR) seal ring: the general use temperature range is -40℃ to 120℃.

4. Hydrogenated nitrile butadiene rubber (HNBR) seal ring: low temperature resistance is better than ordinary nitrile butadiene rubber, the general use temperature range is -40℃ to 150℃.

5, ethylene propylene diene rubber (EPDM) sealing ring: has good weather resistance and low temperature resistance, the general use of the temperature range of -55℃ to 150℃.

6. Neoprene rubber (CR) sealing ring: low temperature resistance is good, but it is easy to crystallize and harden at low temperature, and the general use temperature range is -55℃ to 120℃.

7 butyl rubber (IIR) sealing ring: air tightness is particularly good, low temperature resistance is also good, the general use of the temperature range of -50℃ to 110℃.

8. Metal rubber sealing ring: made of stainless steel wire, does not contain rubber components, has strong use characteristics, including low temperature resistance. The general use range is -80℃ to 800℃.

In addition, there are a number of ultra-low temperature rubber seals, which are made of special formulations and treatment processes to maintain excellent elasticity and sealing performance in extremely cold environments. This kind of sealing ring can generally adapt to temperatures below zero degrees Celsius or even lower, and the specific low temperature resistance range needs to be determined according to the product description and practical application.

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