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In our daily work, we always encounter the problem of such and such hydraulic sealing rings. Dongsheng sealing ring tells you what are the most common sealing problems of hydraulic sealing rings?First of all, we need to know what the hydraulic sealing ring is?What is the hydraulic sealing ring?Hydraulic sealing ring (Hydraulicseal)It is a kind of lip-type sealing ring, which requires a very small leakage of hydraulic sealing ring and has a good sealing effect.
So, what kind of sealing problems do several common hydraulic cylinder sealing rings have?
Q: What is a qualified hydraulic sealing ring?
: 1.The material is dense and it is not easy to leak working media or materials.Because the sealing ring itself is to prevent leakage.2.Good adaptability and stability for working media.3.With proper mechanical strength and hardness, it is almost unaffected by the working medium.For example, the commonly used sealing ring is made of carbon-N, silica gel, ethylene-propylene oxide, fluorine glue, etc.The reaction of different materials to different working conditions is not the same, such as the oil-resistant and wear-resistant nature of the material, high temperature resistance of silica gel, ozone resistance, etc.4.Good compression, small permanent deformation.5.Good temperature adaptability, no softening, no decomposition at high temperature, no hardening at low temperature.6.The friction coefficient is small and the wear resistance is good.7.Good corrosion resistance, no softening at high temperature, no decomposition, no hardening at low temperature, no brittle cracking.8.The softness and elasticity that fit with the sealing surface are good.9.Internal ozone and aging resistance are good, and the service life is long.10.Good processing performance, low price.
Q: How to choose the hydraulic sealing ring correctly?
: 1.The V-shaped sealing ring is an elastic rubber sealing ring acting in an axial direction and is used as a pressure-free seal for the rotating shaft.The sealing lip has good activity and adaptability, which can compensate for large tolerances and angle deviations, prevent internal grease or oil leakage from the outside, and prevent the invasion of external splashing water or dust.
2. O-type sealing ring is mainly used for static sealing and reciprocating sealing. For rotary motion sealing, limited to low speed rotary sealing device. The rectangular sealing ring is generally installed in a groove with a rectangular section on the outer circle or inner circle. The Y-type sealing ring is widely used in reciprocating sealing devices. In addition, there is a spring tension (spring storage) sealing ring, which is to add a spring to the PTFE sealing material, with O-Spring, V-Spring, U-Spring
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