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Oil seal OS-PA32

OS-PA32


Description


  • 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 insufficient lubrication and dry running
  • Very low friction coeffi cient, stick-slip free running
  • Non-moulded processing
  • Inside diameter from 31mm 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


Materials


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. 2,5 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


Shaft

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


Installation


Please read our installation instructions.

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