The two-way acting sealing ring for piston rod is composed of an anti-wear filled polytetrafluoroethylene PTFE ring and O-shaped rubber sealing ring. The O-ring provides elasticity, can compensate the wear of PTFE step ring, and has a two-way sealing effect. It is applicable to the sealing of hydraulic cylinder piston. It is generally used together with the guide ring. Shaft diameter less than φ 30, split trench shall be adopted.
Scope of application
Pressure: ≤ 60MPa
Speed: ≤ 15m / S
Frequency: ≤ 5Hz
Temperature: - 45 ℃ ~ + 200 ℃ (depending on the material of O-ring, NBR: - 20 ℃ ~ + 100 ℃, FKM: - 45 ℃ ~ + 200 ℃)
Performance:
The stepped ring GSI for shaft is suitable for piston rods with pressure on both sides.
Very high pressure under pressure and harsh conditions stability
Good thermal conductivity,Very good extrusion resistance and reliability
High wear resistance,Low friction, no stick slip
Material Science:
The wear ring is PTFE bronze composite;O-ring is NBR; Or fluororubber FKM
Feature:
The sealing effect of Gray ring is to affect the sealing surface according to its own deformation
High initial contact stress is generated to prevent the leakage of pressureless liquid.
When the hydraulic cylinder works, the elastic deformation of the pressurized liquid through the 0-shaped sealing ring
The square sealing ring is squeezed to the maximum extent to make it cling to the sealing surface and
Generate a higher additional contact that increases with the increase of the pressure of the pressurized liquid
Stress, and together with the initial contact stress, prevent the pressure liquid from leaking
Leak.
Special note: the sealing ring is matched with NBR O-ring, and the normal temperature is below 100 ℃. If you need high temperature resistant FKM O-ring, please contact the seller and provide a quotation
