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Oil seal OS-D15

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Inside diameter
Outside diameter
Material sealing lip
Material metal
Stock Indicator
  1. Zwolle 4 items
  1. Oil Seal NBR Type: OS-D15
    Dimensions: 15 x 24 x 7
    Part number: 6525843
    In Stock
    More Details
  2. Oliekeerring NBR Groen Dubbele dichtlip Type: OS-D15
    Dimensions: 15 x 24 x 7
    Part number: 374199
    In Stock
    More Details
  3. Oil Seal NBR Type: OS-D15
    Dimensions: 17 x 28 x 7
    Part number: 327003
    In Stock
    More Details
  4. Oil Seal FKM Type: OS-B12
    Dimensions: 6.35 x 12.67 x 4.78
    Part number: 491643
    Delivery time: ± 16 weeks
    More Details
  5. Oil Seal FKM Type: OS-B12
    Dimensions: 9.52 x 17.55 x 3.96
    Part number: 477482
    In Stock
    More Details

5 Items

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  • Double-acting radial shaft seal
  • Two spring-loaded sealing lips
  • Metal OD

Special features

  • Separation of two media by just one seal
  • Combination of 2 sealing lips in one component
  • Very fi rm and exact fi t 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. A version with outside diameter coated with bore sealant is available on request.

Applications e.g.:

  • Separation of two media in rotating machine elements

Double-acting radial shaft sealTwo spring-loaded sealing lipsMetal OD


Standard material

Elastomer NBR 70 black
Veer Spring steel according to DIN EN 10270-1
Metal case Carbon steel according to DIN EN 10139

Special materials

Elastomer FKM
Spring Stainless steel 1.4301
Metal case Stainless steel 1.4301

Application parameters

For the standard materials combination

Temperature  -40°C to +100°C                                                                                           
Pressure depressurized, max. 0.02 MPa
Shaft speed max. 5 m/s , and acc. to chart „Operating parameters for rotary shaft seals“
Media Mineral oil based lubricants, synthetic lubricants

When synthetic lubricants are used for which there is no empirical experience, test the compatibility in the laboratory or - better even - in practical trials. The operating temperature should not exceed 80°C.

Design information


Tolerance ISO h11
Hardness min. 45 HRC
Roughness Ra = 0,2 - 0,8 μm
Rz 1-5 μm 
Rmax ≤ 6,3 μm
Surface fi nish free of orientation (lead free)

Housing bore

Tolerance ISO H8
Roughness Ra = 1,6 - 6,3 μm 
Rz = 6,3 - 16 μm 
Rmax ≤ 16 μm


Please read our installation instructions.