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Description of the type and standard of the seal
Type and standard of seals
1, O-ring: usually used as a static seal, such as working pressure beyond 20MPa, usually require the addition of PTFE data retaining ring.
2, hole seal: common V-rings, U-rings, Glyd rings, combined seals and so on.
V-shaped hole for hole
U-ring for hole Combination seal
The V-shaped ring usually uses heavy-duty hydraulic cylinders that are tightly sealed. Usually, it is required to be a pair of back-to-back devices. Open-type grooves are used. The guide elements of this type are usually made of copper sleeves.
U-shaped rings are the most widely used, and many engineering cylinders and hydraulic cylinders are selected for this type of sealing. Sealed securely. Open trenches or closed trenches are available, many of which are guided by a guide strip.
The Glyd ring is usually used in the case where the leakage requirement is not too high. Because the information of the sealing ring sealing ring is mostly PTFE+40% copper powder, the leakage value of this material is large under low pressure, and the pressure is higher. The higher the sealing effect, the better. Servo cylinders are usually selected from this type of seal. Most of its guiding elements use guide tapes.
There are many types of combined seals, many of which are modeled after the DAS-type seals of the company, usually using a compact cylinder with a guide element with a guide ring. After that, no other guiding elements can be added.
3, shaft seal: common V-shaped ring, U-shaped ring, Sterling and so on.
4, dust ring: common double effect dust ring and single effect dust ring.
Sterling U-ring V-ring
Double effect dust ring (usually polyurethane information)
It is also a double-effect dust-proof ring (combination type), the O-ring data is butyl rubber, and the sealing ring material is usually PTFE+40% copper powder.
This is a very common single-effect dust ring for use in normal situations.
This is a dust ring with a skeleton. PARKER has an AF frame dust ring for use in extremely harsh environments.
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