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Characteristics of rotary seal

The rotary seal is a dynamic seal. The rotary seal ring is composed of a slip ring filled with PTFE and a rubber O-ring that provides elasticity. It is used to seal the rod with rotating or oscillating motion. Shafts, pins, rotary joints, etc., have rotary hydraulic rotation in various industrial fields such as construction machinery, construction machinery, automotive equipment, etc. It is a two-way action and can withstand pressure on both sides or alternating pressure rotary seal.

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　　Rotary sealIt is a dynamic seal. The rotating seal ring is composed of a slip ring filled with PTFE and a rubber O-ring that provides elasticity. It is used to seal a rod with rotating or oscillating motion. Shafts, pins, rotary joints, etc., have rotary hydraulic rotation in various industrial fields such as construction machinery, construction machinery, automotive equipment, etc. It is a two-way action and can withstand pressure on both sides or alternating pressure rotary seal.

Rotary seal has many characteristics, including good dimensional stability; high pressure resistance, wear resistance, high temperature resistance; resistance to most media, strong chemical resistance; small installation space, simple groove, lubrication cavity; It can be provided when a piston rod or piston seal is required; the friction is small, it does not crawl when starting, and it can ensure constant movement even at low speeds.

The rotary seal is generally made of rubber material, which has good adaptability to the medium, and different sealing ring materials can be selected according to different working conditions; The sealing ring material has good elasticity, combined with high-performance modified PTFE material, and has a wide working temperature, such as fluorine rubber and silicone rubber; Low pressure sealing performance is good, can be used for pneumatic rotary seal, high lubrication requirements, can not be used for non-lubricated pneumatic rotary seal.

The rotary seal has good dimensional stability; high pressure resistance, wear resistance, high temperature resistance, resistance to most media, and strong chemical resistance, Moreover, the installation space is small, the groove is simple, and there is a lubrication cavity, which can be used where a piston rod or piston seal is needed. The important thing is that its friction is small, it does not crawl when starting, and it can ensure continuous movement even at low speed. However, it should be noted that high-temperature fluids should use fluorine and silicone rubber, and the working temperature should be greater than or equal to 160 degrees Celsius. It is recommended to use modified PTFE oil seals. If the lubrication of the legs and feet is not good, this PTFE oil seal is also recommended.

At the same time, it should be noted that hydraulic pumps and hydraulic motors must use pressure-resistant, outer-frame rubber oil seals. Oil seals have high requirements for lubrication. Lack of lubrication is the main reason for oil seal failure.

Key words:

Rotary seal