NBR PU FKM Metal dust ring Customized Hydraulic Piston Dust Seal Ring metal o ring

The dust ring is mounted on the piston rod to prevent external dust from mixing with the reciprocating seal of the hydraulic cylinder.

Precautions for the use of dust ring: All dust rings can not be pressured, that is, they do not have sealing function. Their function is only to prevent dust and must be used with other seals; The design should avoid the lip of the dust ring and the piston rod hole or the opposite side of the wrench contact, resulting in being cut.

The dust ring is applied to the hydraulic pneumatic piston rod. Its main function is to remove the dust attached to the external surface of the piston cylinder block and prevent sand, water and pollutants from entering the sealed cylinder block.

The actual use of dust rings are mostly made of rubber material, its working characteristics are dry friction, so the rubber material is required to have particularly good wear resistance and low compression permanent deformation performance. In recent years, new dust-proof seals with other materials and rubber materials have been gradually popularized, such as PTFE and O-ring combination, which has a good sealing effect. Long service life, increasingly widely used.

There are more and more types of dustproof rings, which can be divided into many types according to their functions, characteristics, structural types and sealing mechanisms.

(1) According to the structure, it is divided into rectangular dustproof sealing ring; Chamfered dust seal ring; Foot type dust seal ring; J-shaped dustproof seal ring; Triangular dust seal ring.

(2) According to the action: single action dust-proof sealing ring; Double acting dust-proof seal ring.

⑧ According to the skeleton: skeleton free dust sealing ring; Skeleton type dust seal ring.

(4) According to whether the combination is divided into: single type dustproof sealing ring; Combined dust seal ring.