Good price and quality O-ring kits box engineering Xiaobian tells: the solution to the failure of the O-ring seal, let's have a simple understanding together!
1. The O-ring is flat after use
1. The main reason is that the material elasticity and thermal resistance of the sealing ring are poor. After the O-ring is used in the working medium of the hydraulic system for a period of time, the phenomenon that the sealing ring is excessively expanded and the pressing force increases. This is because the rubber vulcanization is not complete enough during the production process of the sealing ring, so under the action of pressure, the three sides of the sealing ring section are pressed into a flat shape;
2. The solution should be a rubber material with low coagulation performance. Under normal working conditions, choose heat-resistant rubber materials (due to friction during work) such as nitrile rubber, neoprene, etc.; confirm that the sealing ring material should be compatible with the medium used, and check the physical properties of the sealing ring. Meet the design requirements.

2. Protrusion, gnawing and spiral failure of O-ring
1. The main reasons for the protruding and gnawing failure: the sealing gap is too large, the system pressure exceeds the sealing pressure strength or the retaining ring is not added, the sealing ring material does not meet the design hardness requirements, and the processing size of the sealing groove of the sealing ring does not meet the standard It is stipulated that the selection of the sealing ring is inappropriate (too large relative to the size of the sealing groove), etc. The main reasons for screw failure: the concentricity of the parts is too low, the lubrication is not sufficient, the sealing ring material is too soft, when some parts of the sealing ring are sliding and the other part is rolling, causing distortion or cracks;
2. The solution is to reduce the sealing gap, select O-rings of suitable size, and ensure that the concentricity of the parts meets the design requirements; the sealing grooves are processed in strict accordance with the standard, and enhanced composite seals are used, such as composite gaskets, which meet the design requirements. Seal material or add a retaining ring to prevent the O-ring from being squeezed out.
The above is the good price and quality O-ring kits box engineering editor: a brief introduction to the relevant knowledge about the solution to the failure of the O-ring seal.