Silica gel filling U-shaped spring seal ring

Abstract

The invention discloses a silica gel filling U-shaped spring seal ring which comprises an elastic seal ring body, a metal ring and silica gel filling ring. The inner side of the elastic seal ring body is recessed to form a U-shaped groove. A lip is formed on each of the upper portion of the lower portion of the U-shaped groove. The section of the metal ring is U-shaped, and the metal ring is disposed in the U-shaped groove. The lips wrap the metal ring. The direction of the U-shaped opening of the metal ring is consistent with the direction of the U-shaped groove. The inside of the metal ring is filled with the silica gel filling ring. A sheet part which protrudes vertically is disposed at the outer edge of the elastic seal ring body. Protruding blocking parts are disposed at the opening of the U-shaped groove of the elastic seal ring body and on the inner sides of the lips. The thickness of each lip of the elastic seal ring body increases from the outer ring to the inner edge, and the upper surface and the lower surface of each lip is provided with recesses. By the silica gel filling U-shaped spring seal ring, the technical problems that the elasticity of conventional seal rings reduces or disappears, the sealing performance of the seal rings becomes poor, the sealing rings wear while rotating in grooves, dirt easies enter the seal rings, and the like are solved.

Description

technical field

[0001] The invention relates to the field of seals for piston systems or pressure systems, in particular to a U-shaped spring seal ring with silica gel filler. Background technique

[0002] As a common mechanical part, the sealing ring is widely used in all walks of life. It is often used in the dynamic sealing between the shaft and the hole, mainly to prevent liquid or gas leakage. Most of the sealing rings produced in the prior art are sealed by the elastomer body, and the sealing force is mainly provided by the system itself and the elasticity of the lip body of the sealing ring itself. With the widespread use of sealing rings, different application fields have different requirements for sealing rings.

[0003] In the prior art, the sealing ring is generally sealed by an elastomer body such as rubber, that is, the sealing force is provided by the elasticity of the sealing ring itself processed by rubber material. However, the sealing ring made of pure ru...

Images