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NBR 70, Black

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  1. Zwolle 8369 items
  2. Central warehouse 1046 items
  1. O‑ring NBR 70 Black
    Dimensions: 589 x 3
    Part number: 250219
    In Stock
    More Details
  2. O‑ring NBR 70 Black
    Dimensions: 780 x 8
    Part number: 247502
    In Stock
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  3. O‑ring NBR 70 Black
    Dimensions: 234 x 10
    Part number: 96938
    Delivery time: ± 40 weeks
    More Details
  4. O‑ring NBR 70 Black
    Dimensions: 105 x 2.2
    Part number: 316832
    Delivery time: 2-4 days
    More Details
  5. O‑ring NBR 70 Black
    Dimensions: 327.56 x 5.33
    Part number: 178307
    Delivery time: ± 40 weeks
    More Details
  6. O‑ring NBR 70 Black
    Dimensions: 9 x 3
    Part number: 11423
    In Stock
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NBR 70 Shore


Among standard seals such as O-rings and radial shaft seals, NBR is the most widely used material. The reasons for this are good mechanical properties, high abrasion resistance, low gas permeability and the high resistance to mineral oil based oils and greases. NBR is a copolymer of butadiene and acrylonitrile. Depending on the application, the content of acrylonitrile can vary between 18% and 50%. Low ACN content improves cold flexibility at the expense of the resistance to oil and fuel. High ACN content improves the resistance to oil and fuel while reducing the cold flexibility and increasing compression set. To obtain balanced properties, our standard NBR materials have an average ACN content around 30%.


NBR has good resistance to:


  • mineral oil-based oils and greases
  • aliphatic hydrocarbons
  • vegetable and animal oils and fats
  • hydraulic oils H, H-L, H-LP
  • hydraulic fluids HFA, HFB, HFC
  • silicone oils and silicone greases
  • water (max. 80°C)


NBR is not resistant to:


  • fuels with high aromatic content
  • aromatic hydrocarbons
  • chlorinated hydrocarbons
  • non-polar solvents
  • hydraulic fluid HFD
  • glycol-based brake fluids
  • ozone, weathering, ageing


Characteristics

Shore

Color Min. temp. (Celsius) Max. temp. (Celsius) Short (Celsius)
NBR 70 black -30 +100 +120
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