NBR H - Nitrile butadiene rubber – high ACN

Clwyd referenceNBR H
ASTM classificationNBR H

On NBR with high ACN: the higher the acrylonitrile content the better the oil and chemical resistance but poorer the low temperature properties. High acrylonitrile will have brittle points at -15C.

Typical applications
  • Aeronautical (good heat resistance, up to around 110 C)
  • Oil resistant seals and diaphragms
  • Non-latex gloves
  • Rollers
Advantages
  • Excellent resistance to oil
  • Good resilience
  • Physical and chemical properties dependent on the ACN content; the higher the ACN content the better the resistance but the lower the flexibility
Disadvantages
  • Inferior to NR in terms of physical strength and flexibility
  • Can be attached by ozone, aromatic hydrocarbons, ketones, esters and aldehydes.
Available hardness range (Shore A)50 - 95
Upper continuous service temp.150°C
Min. temp. for sealing applications-25°C
Minimum non-brittle  temp. -45°C
Tensile strength (up to)28 MPa
Elongation at break (up to)400%
Price BracketVery low
ASTM 1 OilExcellent
ASTM 2 OilExcellent
ASTM 3 OilExcellent
KeroseneExcellent
Liquid BGood
Liquid 101Excellent
Phosphate esterNone
KetoneNone
TolueneNone
Iso-octaneExcellent
MethanolExcellent
Acid (weak)Average
Acid (strong)None
Base (weak)Good
Base (strong)None
Hydrogen sulphideNone
SteamNone
OzoneAverage
RadiationAverage
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