HNBR Sealing Compounds for Energy, Oil, & Gas Service

HNBR compoundsParker’s HNBR sealing compounds provide cost-effective solutions in aggressive EOG environments.

N1173-70, N1231-80 and KB163-90 are sealing compounds made from hydrogenated nitrile, a synthetic polymer that results from the hydrogenation of nitrile rubber (NBR). The hydrogenation process gives HNBR materials enhanced thermal stability (up to 149°C/300°F, with short periods at higher temperatures).

HNBR materials also possess superior mechanical properties and enhanced fluid compatibility over standard nitrile compounds. These properties allow HNBR materials to be a  cost-effective bridging compound between nitrile and fluorocarbon elastomers.

Applications

Due to their enhanced abrasion resistance, Parker’s HNBR elastomers are commonly used in journal bearing seals for drill bits. Their fluid and temperature resistance make N1173-70, N1231-80 and KB163-90 compounds ideal for any EOG applications where high temperatures and harsh chemicals, such as amines, are present.  Check with the Gallagher Engineering Department to be sure HNBR fits your application.

Recommended For:

  • Sour gas
  • Water/glycol
  • Petroleum Oils
  • Silicone greases
  • Water/Steam
  • Most refrigerants including R134a
  • Dilute acids and bases

Not recommended for:

  • Polar solvents
  • Strong acids
  • Fuels
  • Ozone
  • Chlorinated hydrocarbons
  • Acetone
  • Aldehydes
  • Aliphatic hydrocarbons
Key Features:
  • Improved high-temperature resistance over nitrile materials
  • Enhanced wear and abrasion resistance over standard nitrile materials
  • Specific compounds are explosive decompression resistant
  • Ozone resistant
  • Improved chemical compatibility with several aggressive fluid medias
  • Improved compression set resistance
Parker’s HNBR Compounds N1173-70

platen

N1231-80

platen

KB163-90 platen Comp A

AS568A-214

Typical Physical Properties
Hardness, Shore A, pts. 71 81 88 88
Tensile strength, psi 3048 3413 3219 2875
Elongation, % 180 297 107 98
Modulus at 50% elongation, psi Not Tested Not Tested 1552 1350
Compression Set

70hrs @ 150°C (302°F)

% of reflection 18.4 27.1 31.9 45.0
Fluid Immersion ASTM Oil #1

70hrs @ 150°C (302°F)

Hardness change, pts. 0 +3.0 +2.0 Not Tested
Tensile change, % +3.1 +3.8 +29.3
Elongation change, % +11.1 -7.1 No Change
Volume change. % +3.0 -1.3 -1.5
Fluid Immersion, IRM 903 Oil

70hrs @ 150°C (302°F)

       
Hardness change, pts. -7.0 Not Tested -7.0 Not Tested
Tensile change, % -22.6 +14.9
Elongation change, % -11.1 +2.8
Volume change. % +14.4 +8.2
Fluid Immersion, IRM 903 Oil

168hrs @ 150°C (302°F)

Hardness change, pts. Not Tested Not Tested Not Tested -8.0
Tensile change, % +12.1
Elongation change, % +4.1
Volume change. % +6.5
Heat Aging

70hrs @ 150°C (302°F)

Hardness change, pts. +3.0 +4.0 +3.0 Not Tested
Tensile change, % -4.0 -8.5 +21.6
Elongation change, % -18.0 -20.2 -14.0

Unless otherwise noted, these are test values from a limited number of samples and should be used for establishing specific limitations