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Factors to consider when choosing silicone rubber O-ring seal products
2021-07-19
Factors to consider when choosing silicone rubber O-ring seal products
1. Working medium and working environment conditions When selecting the material of O-ring seals, the first thing to consider is whether the sealing medium is compatible when working. It is also necessary to comprehensively consider working conditions such as the pressure at the seal, the temperature, the length of the working time, and the cycle of operation. If it is used in rotary seal applications, the temperature rise response due to frictional heat needs to be considered. The materials, physical properties and chemical changes used in different seal products are different. 2. Sealing form Taicang silicone rubber O-rings can be divided into static seals and dynamic seals according to the type of load; according to the sealing purpose, they can be divided into three types of seals: seals for holes, seals for shafts, and seals for rotating shafts; according to The installation form can be divided into radial installation and axial installation, etc. For radial installation, for shaft seals, the deviation between the inner diameter of the O-ring product and the sealed diameter d2 should be as small as possible; for hole seals, the inner diameter of the O-ring should be equal to or slightly smaller than the groove The diameter d1. When installing in the axial direction, the pressure direction must be considered. Under internal pressure, the outer diameter of the O-ring should be approximately 1 to 2% larger than the groove outer diameter d3; under external pressure, the inner diameter of the O-ring product should be approximately 1 to 3% smaller than the groove inner diameter d4. O-rings and other seal products with various sizes and specifications, with high-end product quality and dedicated knowledge, serve customers in various industries, and solve problems for users in various sealing solutions. |
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