Image shown is representative and may differ from the actual product in size, proportions, and color shade
0.210 in
(5.33 mm)
1.100 in
(27.94 mm)
NBR Parker N0818-70 O-Ring, Size: -320
Material: NBR Parker N0818-70 O-Ring
Size: AS568 -320 O-Ring
Part Number: N0818-70-OR-320
Parker Seal® (Parker)
N0818-70
NBR (Nitrile, Buna-N)
70
Shore A
Internal Lubrication
Color: Black
Detailed Description
N0818-70-OR-320 is a Black, 70 Shore A, NBR (Nitrile, Buna-N) O-Ring made from Parker Seal® (Parker). It is a 70 durometer NBR (Nitrile, Buna-N). Parker Seal® (Parker) N0818-70 is manufactured with the following features & specifications: Internal Lubrication, General Purpose Material. N0818-70-OR-320 is AS568 size -320 O-Ring also referred to as 5.33mm (Cross Sectional Diameter (CS)) x 27.94mm (Inside Diameter (ID)). Material: 70 Durometer NBR Parker N0818-70 O-Ring Size: AS568 -320, 5.33mm CS X 27.94mm ID (0.210" CS X 1.100" ID)
| Technical Specification | Value |
|---|---|
| Compound Number | N0818-70 |
| Brand | Parker Seal® (Parker) |
| Material | NBR (Nitrile, Buna-N) |
| Color | Black |
| Durometer | 70 Shore A Hardness |
| High Temperature | 121 °C / 250 °F |
| Low Temperature | -34 °C / -29 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | AS568 |
| Size | -320 |
| Cross Section (CS) | 5.33 mm / 0.210 in |
| Inside Diameter (ID) | 27.94 mm / 1.100 in |
Parker’s N0818-70 is a 70 Shore A black nitrile rubber (NBR) compound formulated with internal lubrication to reduce friction during installation and service. Designed to meet ASTM D2000/J200 2BG720 requirements, it provides reliable sealing performance across a service temperature range of -30°F to 250°F while maintaining good compression set resistance and mechanical stability. The internally lubricated formulation helps minimize installation damage, reduce stick-slip, and improve seal life in both static and light dynamic applications. This compound is compatible with petroleum-based oils, water up to 212°F, salt and alkali solutions, and weak acids, making it suitable for a wide range of industrial and hydraulic sealing uses.
N0818-70 is commonly used for O-rings and gaskets in pumps, valves, cylinders, and general machinery where easier assembly and consistent sealing are important. It is not recommended for aromatic fuels, strong acids, glycols, ozone exposure, or polar solvents. This internally lubricated nitrile grade offers a practical balance of oil resistance, ease of installation, and specification compliance for everyday sealing applications. Canyon Components offers equivalent internally lubricated NBR materials designed to match the performance and handling characteristics of Parker N0818-70.
Common relevant keywords:
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