Y-ring section is Y-shaped, is a typical lip ring.
According to its cross-section of the high and wide ratio of different, can be divided into wide, narrow, Yx type and other categories;
If the height of the two lips is equal, it can be divided into shaft, hole type of common high lip Y-ring and unequal high lip shaft Y-shaped ring and hole with Y-shaped ring.
Y-ring is widely used in reciprocating seal device, its service life is higher than the O-ring. Y-type ring for the working pressure of not more than 40MPa, the working temperature of -30 ~ 80 ℃;
Working speed range: 0.21 ~ 0.6m / s when made with nitrile rubber; 0.05 ~ 0.3m / s when made with fluororubber; 0.01 ~ lm / s when made with polyurethane rubber. Y-ring sealing performance, service life and different retaining ring when the working pressure limit, are made of polyurethane rubber material is better.
Y-shaped ring features can be summarized as follows:
1) Sealing performance is reliable
2) Frictional resistance is small, smooth movement.
3) good pressure, the use of a wide range of pressure.
4) simple structure, low prices.
5) easy to install. In the case of
Y-ring is a hydraulic pneumatic system in the reciprocating seal device commonly used seals, the service life and sealing performance are higher than the O-ring. Y-ring lip is wider than a single V-ring, so the sealing performance is better, just use one, so the friction is less than V-ring. The Y-ring can be adapted to the requirements for pressure and sealing performance by changing the cross-sectional structure and dimensions. Y-ring for working pressure not more than 40MPa; Operating temperature -30 ~ 80 ℃; Working speed range; with nitrile rubber production of 0.01 ~ 0.6m / s, made of polyurethane rubber was 0.05 ~ 0.1m / s The
Y-ring is the most commonly used material is polyurethane rubber, polyurethane rubber Y-ring sealing performance, service life and the use of different retaining ring when the working pressure limit are higher.
Y-type ring to rely on its open lip attached to the sealing sub-coupling surface, and linear contact, under the pressure of the medium to produce "peak" contact stress, the higher the pressure, the greater the stress. When the coupling member is relatively moved at the working speed, a sealed liquid film is formed between the sealing lip and the sliding coupling surface, thereby producing a sealing action. Seal lip wear, due to the role of medium pressure and have a certain degree of automatic compensation.
Install the Y-ring is the lip must be facing the side of the pressure in order to play a sealed role. In order to prevent the root of the Y-ring from being deformed by the material in the high-pressure state, it is necessary to control the size of the mating gap between the sliding coupling members. In order to protect the service life, The root is squeezed into the mating gap, the ring should be installed in the ring ring.
For wide Y-rings, the width of the cross-section is twice or more than the height. This ring will not be in the groove in the flip, twisted, do not install the support ring.