Our company provides 1000 tons to 10000 tons of Teflon seals and guide rings for China's large forging machinery, accounting for 85% of the market share. Keep a record of zero leakage for more than 10 years!
A.Purpose and performance
The st seal is one-way seal, which is divided into the st seal for piston and the st seal for piston rod. It is composed of a low friction filled polytetrafluoroethylene (PTFE) ring and an O-ring. The O-ring provides sufficient sealing preload and compensates the wear of the PTFE ring. The friction coefficient of PTFE is small and the dynamic and static friction coefficients are similar. It is suitable for high and low speed reciprocating motion and high pressure system. Two step rings are used for sealing, and zero leakage can be achieved. Generally, it should be used together with the guide ring. If the shaft diameter is less than Φ 30, split groove shall be adopted. It can be used for reciprocating plunger and piston rod, such as press, excavator, metallurgical machinery, loader, chemical machinery and other occasions.
B.The material is polytetrafluoroethylene PTFE, and the O-ring is NBR or FKM.                         C.Working conditions
Withstand voltage: 0 ～ 40MPa
Reciprocating speed: ≤ 5m / S
Service temperature: - 40 ℃ ~ + 260 ℃
Working medium: hydraulic oil, gas and water
D. Structural device