Specification selection of pneumatic cylinder sealing ring

1,What is pneumatic cylinder sealing ring?

pneumatic cylinder sealing ring is to prevent the leakage of small particles of fluid or solid from two adjacent interfaces or prevent the entry of external impurities, such as dust, particles and water.

2,Classification of common cylinder sealing rings

①.O-ring: it is mainly used for precision seal and reciprocating seal. When it is used for rotary seal, it is limited to low-speed rotary seal device.

②.Y-ring: it is mainly used for reciprocating seals with low friction or large clearance, and the pressure range is 15-25mpa.

③.U-ring: it is mainly used for reciprocating sealing under the condition of high pressure, fast moving speed and large diameter. The pressure can reach 20-60mpa.

④.L-type seal ring: it is mainly used for manufacturing the reciprocating seal in the hydraulic system, single or double acting standard hydraulic cylinder of piston rod or piston, with the pressure of 0-40MPa.

2,Material and purchase of pneumatic cylinder sealing ring

The sealing ring of pneumatic cylinder is mostly made of rubber, for example: NBR < fluororubber < hydrogenated NBR, oil resistant series; fluorosilicone rubber > silica gel, high temperature resistant series, etc.

Generally speaking, the selection of sealing ring material is particularly important for its sealing performance and service life, so we need to choose according to our own requirements.

3,pneumatic cylinder sealing ring installation and precautions

First of all, make sure that the cylinder itself is clean and free of particles and moisture. During the installation, it is necessary to apply lubricating oil on the sealing ring first and pay attention to the complete sealing when it is embedded into the cylinder groove, so as to ensure that the problem of falling off and leakage will not occur during the use.