How does the seal of the hydraulic cylinder work?

Sealing technology is an important technology in hydraulic cylinders. The selection of proper seals for pressurized cylinder manufacturers can reduce the failure rate of hydraulic cylinders in the working process. Let’s tell you how the seals of hydraulic cylinders work. ?

1. In order to make the groove size tolerance of the hydraulic cylinder itself can be compensated by seals, the manufacturer must strictly follow the national standard groove size tolerance, roughness and other data requirements during the production process, whether it is in the seal or the cylinder. For mass production.

2. If the manufacturer does not pay attention to this problem during the production process. For example, if the groove is too deep, the gap between the root of the seal and the groove will cause the parts to be unable to be fixed, and changes in the interference and rebound force between the lip and the sealing surface will cause low-pressure oil leakage. If the groove is too shallow, the damage rate of the seal lip will also increase, and the oil leakage will be more frequent.

3. The seals generally work in the form of reciprocating motion, and the general shapes are L, U, V, Y and other lip seals. Because its design shape allows the sealing surface to contact the lip in the reciprocating hydraulic cylinder, such a sealing effect is better. The manufacturer's seal contact force and area will continue to increase or decrease as the pressure of the cylinder reciprocates. The situation becomes larger or smaller.