PROPERTIES OF NITRILE ELASTOMERS




Description: Very good resistance to oil and gasoline; superior resistance to petroleum-based hydraulic fluids; wide range of service temperatures; good resistance to hydrocarbon solvents; very good resistance to alkalis and acids.

Limitations: Inferior resistance to ozone, sunlight and natural aging; poor resistance to oxygenated solvents.

Chemistry: Copolymer of butadiene and acrylonitrile. Increasing acrylonitrile content offers better oil, solvent and abrasion resistance but sacrifices low temperature properties.

Trade Names: CHEMIGUMÉ , HYCARÉ , PARACRILÉ , PERBUNANÉ, KRYNACÉ, NYSYSNÉ

 


ASTM D1418 Designation: NBR
ISO 1629 Designation: NBR
ASTM D2000/SAE J200 Type, Class: BF, BG, BK, CH


SIMRIT
Compound
  Color   Hardness
(Shore A)
Description
N455 Black 55 General Purpose; Internal Lubricant
N475 Black 75 General Purpose; Low compression set; Peroxide cure
N445 Black 70 Internally Lubed, FDA Approved
N430 Black 80 Internally Lubed; FDA Approved (Except Dairy, Fatty Foods)
N442 Black 70 Internally Lubed; ANSI/NSF 61; Slight Bloom
N431 Black 60 Internally Lubed; ANSI/NSF 61; Slight Bloom
N418 Black 70 Internally Lubed; Heavy, white, waxy bloom
N447 Black 70 Internally Lubed; Low temp apps
N470 Black 70 SAE J120A Class 1 (oil service); UL Approved
N433 Black 70 SAE J120A Class 2 (fuel service)
N432 Black 75 Aerospace; AMS-P-25732
N466 Black 65 Aerospace; AMS 7271; Low temp. apps; Good fuel resistance