NBR L - Nitrile butadiene rubber – low ACN

Clwyd reference NBR L
ASTM classification NBR L

On NBR with low ACN: the lower the acrylonitrile content the poorer the oil and chemical resistance but higher the low temperature properties. Low acrylonitrile will have brittle points at -45C.

Typical applications
  • Aeronautical (good heat resistance, up to around 110 C)
  • Oil resistant seals and diaphragms
  • Non-latex gloves
  • Rollers
  • 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
  • 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) 40 - 95
Upper continuous service temp. 150°C
Min. temp. for sealing applications -40°C
Minimum non-brittle  temp.  -55°C
Tensile strength (up to) 24 MPa
Elongation at break (up to) 500%
Price Bracket Very low
ASTM 1 Oil Good
ASTM 2 Oil Good
ASTM 3 Oil Good
Kerosene Good
Liquid B Average
Liquid 101 Good
Phosphate ester None
Ketone None
Toluene None
Iso-octane Good
Methanol Good
Acid (weak) Average
Acid (strong) None
Base (weak) Average
Base (strong) None
Hydrogen sulphide None
Steam None
Ozone Average
Radiation Average