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What is the cause of the failure of the silicone sealing ring

Release time:

2021-06-23 11:06

Source:

Dongguan Mingzhen

Influence of hardness and softness of silica gel sealing ring: in many cases, the function and structure of the product can be completely changed according to the different softness of silica gel products. therefore, the silica gel sealing ring will present some problems that cannot be prevented, such as extrusion gap, excessive stress, too high hardness, no rebound of product deformation and other factors, due to the selection of different hardness and softness of silica gel sealing ring in the application process.


Gap problem of silica gel sealing ring: the gap problem can be divided into several factors. one is the rubber problem of raw materials. many silica gel materials show poor resilience due to formula. the lack of tensile force leads to leakage due to less strength in the application process. the processing problem of silica gel ring manufacturers, such as brittle products, which leads to thinner curling thickness, is easy to present this kind of problem, the soft product leads to the inner bulge of the rubber material, which is not ripe, and the deformation after long-term stretching and compression presents a gap problem.
Different sealing methods of silicone sealing ring.
Sealing ring 1. Static tight closing: cylindrical static tight closing equipment is the same as reciprocating tight closing equipment, usually W = 10% ~ 15%, and simple surface tight closing equipment W = 15% ~ 30%.
2. As far as dynamic tight closure is concerned, it can be divided into three working conditions:.
A. reciprocating motion close tightly usually take W = 10% ~ 15%.
B. tight closing of rotary movement must consider the scorched blush effect when selecting the contraction rate. generally speaking, the inner diameter of the o-ring for rotary movement is 3% ~ 5% larger than the shaft diameter, and the contraction rate W = 3% ~ 8% of the outer diameter.
C. low friction transport with O-ring, in order to reduce the friction resistance, usually choose a smaller tightening rate, that is, W = 5% ~ 8%.






 

Today's scientific and technological skills, the sealing and protection skills of many products still have certain defects in the actual process, and the selection of silicone (a kind of rubber material) as the raw material of the seal is a common one for us, so silicone sealing ring, as a kind of seal used in many aspects, often presents some unexpected function problems in the normal application process, which cannot reach the actual problems and cannot show the effect of the product.

Analysis of the causes of failure in the use of silicone seals.

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What are the molding techniques of rubber products?

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How to print the pattern on the transparent key

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