Image shown is representative and may differ from the actual product in size, proportions, and color shade
0.197 in
(5.00 mm)
4.646 in
(118.00 mm)
HNBR Parker N1231-80 X-Ring, Size: 5X118
Material: HNBR Parker N1231-80 X-Ring
Size: Metric 5X118 X-Ring
Part Number: N1231-80-XR-5X118
Color: Black
Detailed Description
N1231-80-XR-5X118 is a Black, 80 Shore A, HNBR (Hydrogenated Nitrile) X-Ring made from Parker Seal® (Parker). It is a 80 durometer HNBR (Hydrogenated Nitrile). Parker Seal® (Parker) N1231-80 is manufactured with the following features & specifications: Anti-Explosive Decompression. N1231-80-XR-5X118 is Metric size 5X118 X-Ring also referred to as 5mm (Cross Sectional Diameter (CS)) x 118mm (Inside Diameter (ID)). Material: 80 Durometer HNBR Parker N1231-80 X-Ring Size: Metric 5X118, 5mm CS X 118mm ID (0.197" CS X 4.646" ID)
| Technical Specification | Value |
|---|---|
| Compound Number | N1231-80 |
| Brand | Parker Seal® (Parker) |
| Material | HNBR (Hydrogenated Nitrile) |
| Color | Black |
| Durometer | 80 Shore A Hardness |
| High Temperature | 149 °C / 300 °F |
| Low Temperature | -32 °C / -26 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | X-Ring |
| Size Standard | Metric |
| Size | 5X118 |
| Cross Section (CS) | 5.00 mm / 0.197 in |
| Inside Diameter (ID) | 118.00 mm / 4.646 in |
| Other Specifications | |
Anti-Explosive Decompression | |
Parker’s N1231-80 is an 80 Shore A black hydrogenated nitrile rubber (HNBR) compound engineered specifically for explosive decompression and rapid gas decompression (RGD) resistant sealing applications. The hydrogenated nitrile formulation delivers improved thermal stability, chemical resistance, and mechanical strength compared to standard NBR, supporting reliable service across a temperature range of approximately -25°F to 300°F, with short-term capability up to 325°F. This compound performs well in petroleum-based hydraulic oils, motor oils, transmission fluids, greases, R134a refrigerant, water and glycol mixtures, steam, and HFA, HFB, and HFC hydraulic fluids. Its resistance to ozone, aging, and environmental exposure contributes to long-term durability in demanding pressure-cycling environments.
N1231-80 is commonly used for O-rings and gaskets in oil and gas equipment, hydraulic systems, valves, compressors, and other components where resistance to rapid decompression and gas permeation is critical. It is not recommended for polar solvents such as ketones and esters, strong acids, chlorinated hydrocarbons, or automotive and aircraft brake fluids. This HNBR grade is selected when RGD resistance and mechanical robustness are required without transitioning to higher-cost perfluoroelastomers. Canyon Components offers equivalent HNBR materials designed to match the explosive decompression performance, temperature capability, and fluid compatibility of Parker N1231-80.
Common relevant keywords:
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