ACRYLONITRILE / BUTADIENE (NBR)

NBR, Buna-N, and nitrile all represent the same elastomer based on a butadiene and acrylonitrile copolymer. Nitrile is inherently resistant to hydraulic fluids, lubricating oils, transmission fluids and other non-polar petroleum based products due to the polar structure of this elastomer. Nitriles are also resistant to air and water environments.

Utilizing the variety of nitrite's polymers and compounding ingredients, Minnesota Rubber has derived nitrile compounds to withstand environments that require low compression set, abrasion resistance, low temperature flex, gas permeation resistance, ozone resistance and/or stress-stain properties.

By hydrogenation, carboxylic acid addition, or PVC blending, the nitrile polymer can meet a more specified range of physical or chemical requirements.

Compound 366Y

  Excellent petroleum fluid and water resistance
  Outstanding oil resistance: aniline points 55°C to 124°C (130°F to 255°F)
  Good compression set
  UL approved; see UL section for applications

Compound 372W

  Excellent oil and water resistance
  Good compression set
  Low durometer and modulus

Compound 431 T

  Low swell to petroleum oils and fuels
  Outstanding oil resistance (aniline points below 55ºC/130ºF)
  Low temperature properties to -34ºC/-30ºF
  High tensile strength and good abrasion resistance
  Good heat aging

Compound 523HW

  Excellent low temperature performance at -57ºC/-70ºF
  UL approved; see UL section for applications

Compound 525K

  Excellent abrasion and wear resistance
  Dimensional tolerances met during secondary grinding
  Excellent contract properties with plastics

CARBOXYLATED NITRILE (XNBR)

The carboxyl group is added to significantly improve nitrile's abrasion resistance while retaining excellent oil and solvent resistance. XNBR compounds provide high tensile strength and good physical properties at high temperatures.

Compound 525L

  Carboxylate nitrile compound
  Outstanding toughness and abrasion qualities

NITRILEIPVC RESIN BLENDS (NBRIPVC)

PVC resins are blended with nitrile polymers to provide increased resistance to ozone and abrasion. The PVC also provides a significant improvement in solvent resistance yet maintains similar chemical and physical properties, commonly noted among nitrile elastomers. The addition of the PVC resins also provides a greater pigment-carrying capacity that allows better retention of pastel and bright colors.

HIGHLY SATURATED NITRILE (HNBR)

HNBR has recently been developed to meet temperature of up to 150ºC/302ºF while retaining resistance to petroleum oils. Obtained by hydrogenerating the nitrile copolymer, HNBR fills the gap left by NBR and FKM elastomers when high temperature conditions require high tensile strength while maintaining excellent resistance to motor oil, ATFS, sour gas, amine/oil mixtures, oxidized fuels and lubricating oils

Compound 574BF

  Saturated nitrile compound
  High temperature operations to 150ºC/300ºF
   Excellent oil and fuel resistance