The selection of rubber O-ring hardness is very important. For example, the hardness of the water pump turbine in a power plant is 70 (Shore), and the sealing ring often falls off or even breaks horizontally. Then, choosing the 85-90 (Shore) sealing ring has an ideal effect. The hardness of rubber O-rings is generally 40-90IRHD, but it is generally more suitable to use 70IRHD. In addition to silicone, 60IRHD is generally used.

Applicable scope

Rubber O-ring seals are suitable for installation on various industrial equipment, with floating sealing effects in specified temperatures, pressures, and different liquid and gas media under static or dynamic conditions. Various types of sealing components are widely used in bathrooms, ships, vehicles, hardware, electronics, toys, electrical appliances, aerospace equipment, machinery, and various instrument equipment. Rubber O-ring seals are mainly used for static sealing and reciprocating motion sealing. When used for rotary motion sealing, it is limited to low-speed rotary sealing devices. Rubber O-ring seals are generally installed in rectangular pipe trenches on the upper section of the outer or inner circle. The rubber O-ring still has good sealing and shock absorption effects in terms of oil resistance, acid and alkali resistance, wear resistance, and chemical corrosion resistance. Therefore, rubber O-ring seals are widely used seals in hydraulic and pneumatic transmission systems.