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Oil seal OS-A12

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  1. Zwolle 4 items
  1. Oil Seal NBR Type: OS-A12
    Dimensions: 13 x 19 x 3
    Part number: 542511
    In Stock
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  2. Oil Seal NBR Type: OS-A12
    Dimensions: 15.87 x 20.63 x 2.38
    Part number: 198809
    Delivery time: ± 18 weeks
    More Details
  3. Oil Seal NBR Type: OS-A12
    Dimensions: 18 x 24 x 4
    Part number: 542512
    In Stock
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  4. Oil Seal NBR Type: OS-A12
    Dimensions: 28.5 x 52 x 5
    Part number: 303260
    In Stock
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  5. Oil Seal NBR Type: OS-A12
    Dimensions: 4 x 9 x 3
    Part number: 542510
    In Stock
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  6. Oil Seal NBR Type: OS-A12
    Dimensions: 40 x 62 x 6
    Part number: 330821
    Delivery time: 4 weeks
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OS-A12


Description


  • Elastomer-coated OD, flat
  • Non-spring-loaded sealing lip ribbed OD available on request, type OS-G12


Special features


  • Non-spring-loaded lip design, for secondary sealing jobs e.g., grease sealing
  • Low friction
  • Compact design
  • Little installation space
  • Reliable static sealing inside housing
  • For housings with high thermal expansion, e.g., light metal housing
  • For split housings
  • For housings with increased surface roughness
  • No risk of fretting corrosion


Applications e.g.:


  • Secondary sealing jobs
  • Mechanical and apparatus engineering
  • Drive systems
  • Electric motors


Materials


Standard material


Elastomer NBR 70 black
Metal case Carbon steel according to DIN EN 10139


Special materials


Elastomer FKM
Silicone
ACM
HNBR
CR
EPDM
Metal case Stainless steel 1.4301



Application parameters


For the standard materials combination:

Temperature  -40°C to +100°C                                                                                           
Pressure depressurized
Shaft speed max. 6 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


Shaft

Tolerance ISO h11
Hardness min. 45 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 = 1,6 - 6,3 μm 
Rz = 10 - 20 μm 
Rmax ≤ 25 μm



Installation


Please read our installation instructions.

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