The rubber O-ring seal is a sealing element with a circular cross-sectional shape. It is widely used in many kinds of mechanical equipment, and it plays a sealing role in a certain temperature, pressure, and different liquid or gas media, and it is also in contact with other sealing rings. ratio.
First, the rubber O-ring has the following basic properties:
1, the sealing structure is simple, the installation site is compact, and the weight is lighter.
2, self-sealing effect, often only with a seal to complete the sealing effect.
3, good sealing performance, almost no leakage when used as a fixed seal, when used as a sports seal, only some leakage when the speed is high.
4. The frictional resistance of motion is very small, and it can also adapt to situations where pressure alternates.
5, size and groove have been standardized, low cost, easy to get, easy to use and outsourcing.
Second, there are 3 differences between rubber O-rings and other seals:
1. The frictional resistance at starting is large.
2. When used as a seal for pneumatic devices, it must be lubricated to prevent wear.
3, the coupling size (sealing ring), such as the moving surface, grooves, gaps and other processing dimensions and precision requirements are very strict.