NBR Parker NB194-90 O-Ring, Size: -020
Material: NBR Parker NB194-90 O-Ring
Size: AS568 -020 O-Ring
Part Number: NB194-90-OR-020
Parker Seal® (Parker)
NB194-90
NBR (Nitrile, Buna-N)
90
Shore A
Extrusion Resistant
General Purpose Material
Color: Black
Detailed Description
NB194-90-OR-020 is a Black, 90 Shore A, NBR (Nitrile, Buna-N) O-Ring made from Parker Seal® (Parker). Parker Seal® (Parker) NB194-90 is manufactured with the following features & specifications: Extrusion Resistant, General Purpose Material. NB194-90-OR-020 is AS568 size -020 O-Ring also referred to as 1.78mm (Cross Sectional Diameter (CS)) x 21.95mm (Inside Diameter (ID)).
Material: NBR Parker NB194-90 O-Ring
Size: AS568 -020, 1.78mm CS X 21.95mm ID (0.070" CS X 0.864" ID)
| Technical Specification | Value |
|---|---|
| Compound Number | NB194-90 |
| Brand | Parker Seal® (Parker) |
| Material | NBR (Nitrile, Buna-N) |
| Color | Black |
| Durometer | 90 Shore A |
| High Temperature | 121 °C / 250 °F |
| Low Temperature | -34 °C / -29 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | AS568 |
| Size | -020 |
| Cross Section (CS) | 1.78 mm / 0.070 in |
| Inside Diameter (ID) | 21.95 mm / 0.864 in |
| Other Specifications | |
Extrusion Resistant | |
Parker’s NB194-90 is a 90 Shore A black peroxide-cured nitrile rubber (NBR) compound engineered for high-pressure sealing applications where extrusion resistance and low compression set are critical. Developed specifically for demanding Energy, Oil, and Gas environments, this material offers improved high-temperature capability compared to conventional sulfur-cured nitriles while maintaining excellent resistance to petroleum-based oils and fluids. The peroxide-cured formulation delivers exceptional compression set resistance, helping seals retain load and geometry over extended service under heat and pressure. Its high durometer and enhanced mechanical strength make NB194-90 suitable for applications where back-up rings cannot be used or space constraints limit gland design.
NB194-90 is commonly used for O-rings and gaskets in high-pressure oilfield equipment, valves, pumps, and other pressure-containing assemblies where extrusion control is essential. It is particularly effective in applications exposed to elevated temperatures and aggressive pressure cycling that can cause standard nitrile materials to deform or extrude. This compound provides a practical alternative to back-up ring designs while extending seal life and reliability. Canyon Components offers equivalent high-durometer, extrusion-resistant NBR materials designed to match the compression set performance, temperature capability, and pressure resistance of Parker NB194-90.
Common relevant keywords:
extrusion resistant NBR O-rings, 90 Shore A nitrile rubber, peroxide cured nitrile elastomer, low compression set NBR seals, high pressure oilfield O-rings, energy industry sealing materials, back-up ring alternative elastomers, high temperature nitrile rubber, pressure resistant NBR gaskets, Parker NB194-90 equivalent, Datasheet, TDS, Test Report, MTR, MSDS, SDS