The running time of rubber seals is generally different, and the use of appropriate rubber seals can achieve medium and long service life of the equipment. At this time, deterioration of the rubber material or wear of the seal lip may lead to seal failure. For seals with a service life of less than 100 hours, failure problems are usually caused by improper selection of the seal structure, elastomer or shaft surface roughness.
The pressure receiving surface of the radial lip seal has a lip shape, which makes the lip completely contact with the sealing surface to produce a sealing effect, and is widely used in the dynamic seal of reciprocating hydraulic cylinder.
Therefore, the rotary shaft lip seal is also known as the oil seal. Its function is to avoid medium leakage or dust and impurities from the outside. It is mainly used as a rotary shaft seal for low pressure fluid media.
The main causes of rubber seal failure:
Improper selection of seals that fail to meet the requirements of quality standards is often an undesirable phenomenon. In addition, when the assembly is forced, part of the seal is deformed, and the seal surface is scratched by burrs at the sharp edges of splines and threads, which may cause the seal to fail.
When we choose, how to choose the right shape, type and material of the seal ring. Should be in accordance with the seal type, medium type, pressure, temperature and the relative speed of movement between the two pairs of seals.
Before the installation is finished, we should carefully check the purchased seals, and whether the products are degraded, expired, deformed, and so on. The surface of the seal should be clean.