Double Lip Single Lip PTFE Shaft Oil Seal With Stainless Steel Case

Double Lip Single Lip PTFE Shaft Oil Seal With Stainless Steel Case

Radial shaft oil seals with one or more PTFE sealing lip(s) are designed to withstand aggressive environments, high temperatures, high pressures and dry running that traditional radial shaft seals made of elastomeric sealing lip materials cannot withstand. Many of the PTFE compounds are approved. Main advantages of PTFE seals include:
High chemical resistance
Withstand speeds up to 30 m/s (5 900 ft/min)
Wide operating temperature range, –70 to +250 °C (–95 to +480 °F)
Withstand pressures up to 3,5 MPa (500 psi)
Withstand dry running

There are two main executions of PTFE oil seals: those with a metal case and those without a metal case. The metal case can be made of steel, aluminium or any of the stainless steel materials SS 304, SS 316 and SS 316 TI. The PTFE material should be selected based on the needs of the application.

PTFE oil seals without a metal case can be designed with an O-ring in the outside diameter groove to provide static sealing ability. Both the PTFE and O-ring material can be selected to meet the demands of different operating conditions, e.g. in the food industry to enable disassembly of the equipment for cleaning.

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