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Oil seal OS-PA30



  • Pressure loadable radial shaft seal
  • Metal OD
  • Sealing lip made of PTFE
  • Sealing lip with elastomer washer, clamped between 2 metal cases

Special features

  • Permits high shaft speeds
  • High thermal resistance
  • High chemical resistance
  • Pressure loadable
  • Applicable with insuffi cient lubrication and dry running
  • Very low friction coeffi cient, stick-slip free running
  • Non-moulded processing
  • Inside diameter from 20mm possible
  • Small runs without mould cost possible
  • Short delivery time
  • Very firm and exact fit inside the housing due to metal-metal interference fit
  • Be careful when using the product in connection with light metal housings, housings with increased surface roughness and applications with overpressure: Apply sealing aid to the outside diameter if necessary

Applications e.g.:

  • Chemical industry
  • Mechanical and apparatus engineering
  • Drive systems


Standard material

Sealing lip PTFE / glass fi bre / MoS2
Metal case Stainless steel 1.4404 (AISI316L)
Elastomer washer FKM

Special materials

Sealing lip PTFE / carbon graphite
Metal case Standard steel
Elastomer washer Other elastomers on request

Application parameters

For the standard materials combination

Temperature  -90°C to +250°C                                                                                           
Pressure max. 0.5 MPa
Shaft speed max. 40m/s
Media Mineral oil based lubricants, synthetic lubricants, many acids and lyes, solvents, water

The diff erent permitted maximum values should always be seen in connection with all application parameters. The total load on the seal is the combination of individual values.

Design information


Tolerance ISO h11
Hardness min. 50 HRC
Roughness Ra = 0,2 - 0,8 μm
Rz 1-5 μm 
Rmax ≤ 6,3 μm
Surface finish free of orientation (lead free)

Housing bore

Tolerance ISO H8
Roughness Ra = 0.8 - 3.2 μm 
Rz = 6.3 - 16 μm 
Rmax ≤ 16 μm


Please read our installation instructions.