Analysis of the causes of damage to the rubber sealing ring

Analysis of the causes of damage to the rubber sealing ring

Rubber sealing ring is widely used in the sealing field because of its superior elasticity and pressure resistance, which can effectively prevent the leakage of the medium; it is because it is widely used, so it is used in various scenarios and application environments. Uncertainty and uncertainty, these are the important reasons for the frequent failure of rubber seals. Fracture is an important phenomenon of failure. Fractures account for more than 80% of the defects; then what are the reasons that cause the rubber seals to break What? Here is a brief introduction.

Overload of rubber rod seal ring: each material and product has its own safety load, and rubber seal ring is no exception; for example, the load that the rubber ring can bear is 10N force, and the working environment has With a force of 20N, it is easy to break under such overload conditions; therefore, when designing the product, it is necessary to consult the relevant information to see how large the load of the product is, whether the product is operating under overload, generally not exceeding 90% of the product load is relatively safe.

Rubber sealing ring material aging: In many cases, material aging is also an important cause of fracture. Each material has its own life span. If it is used for a long time, it will break if it exceeds its life span; the product will become hard and brittle if it ages Then, stress concentration occurs on the gap and breaks. Therefore, the rubber sealing ring on the mechanical product needs to be replaced in time before aging and breaking to avoid safety accidents due to the break of the rubber ring.

Rubber sealing ring is corroded: The situation of product fracture after being corroded is well understood. For example, the material of silicone sealing ring is not oil-resistant. How to put the silicone sealing ring in an oily environment for long-term use will easily cause damage Corrosion fracture; there is also how to easily break without using fluorine rubber seals in a chemically corrosive environment. Only fluorine rubber seals have corrosion resistance, so you need to understand the material characteristics and environment when choosing the material of the product For the medium, the product can play its greatest role only when the material matches the medium used.

What I have introduced above is the cause of the damage to the rubber sealing ring. I hope it can be helpful to everyone.

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