Rubber sealing products are produced using various types of rubber as the main raw material, with different additives added according to the required properties. Their function is to prevent fluid media from leaking out of the sealed devices and to prevent external dust, sediment, and air from entering the key components inside the sealed devices.
The failure phenomena of rubber sealing products during production include the following: inaccurate dimensions, concave-convex marks on the surface, bubbles on the surface and inside the sealing ring, impurities mixed on the surface and inside the sealing ring, edge curling, obvious inward shrinkage of rubber at the parting line, cracks, splits, and delamination on the surface and inside the sealing ring, volume swelling of the rubber sealing ring, surface damage/cracking, presence of foreign matter on the surface, etc.
According to the data provided by rubber product supplier pexxon, the causes of failure of rubber sealing products during use are summarized as follows:
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Unreasonable shape design, such as insufficient estimation of the pressure borne by the seal, incorrect understanding of the contact stress distribution on the sealing surface, unreasonable design of the groove for placing the seal, and mismatch with the surrounding media, etc.
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Quality issues, such as unstable quality of raw materials, and poor quality of finished products caused by problems in the production process (e.g., wrong raw materials added during rubber mixing, incorrect vulcanization conditions), etc.
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Improper storage and use, such as inappropriate warehouse environment for storing sealing products; sealing products with different compositions have different usage conditions, and improper use can easily lead to failure.