Image shown is representative and may differ from the actual product in size, proportions, and color shade
0.315 in
(8.00 mm)
3.150 in
(80.00 mm)
NBR Parker N0545-40 O-Ring, Size: 8X80
Material: NBR Parker N0545-40 O-Ring
Size: Metric 8X80 O-Ring
Part Number: N0545-40-OR-8X80
Color: Black
Detailed Description
N0545-40-OR-8X80 is a Black, 40 Shore A, NBR (Nitrile, Buna-N) O-Ring made from Parker Seal® (Parker). It is a 40 durometer NBR (Nitrile, Buna-N). N0545-40-OR-8X80 is Metric size 8X80 O-Ring also referred to as 8mm (Cross Sectional Diameter (CS)) x 80mm (Inside Diameter (ID)). Material: 40 Durometer NBR Parker N0545-40 O-Ring Size: Metric 8X80, 8mm CS X 80mm ID (0.315" CS X 3.150" ID)
| Technical Specification | Value |
|---|---|
| Compound Number | N0545-40 |
| Brand | Parker Seal® (Parker) |
| Material | NBR (Nitrile, Buna-N) |
| Color | Black |
| Durometer | 40 Shore A Hardness |
| High Temperature | 107 °C / 225 °F |
| Low Temperature | -43 °C / -45 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | Metric |
| Size | 8X80 |
| Cross Section (CS) | 8.00 mm / 0.315 in |
| Inside Diameter (ID) | 80.00 mm / 3.150 in |
Parker’s N0545-40 is a 40 Shore A black nitrile rubber (NBR) compound designed for low-hardness sealing applications that require excellent flexibility and oil resistance. Qualified to ASTM D2000 M2BG410 and AMS 3201, it operates reliably across a service temperature range of -45°F to 225°F while maintaining good compression set behavior and elastic recovery. 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 aerospace-adjacent fluid handling systems. Its softer durometer allows improved conformability and sealing performance in low clamp load or irregular gland conditions.
N0545-40 is commonly used for O-rings and gaskets in hydraulic equipment, pumps, valves, and general machinery where flexibility and oil compatibility are prioritized over high pressure extrusion resistance. It is not recommended for aromatic fuels, strong acids, glycols, ozone exposure, or polar solvents. This material provides a dependable, specification-backed nitrile solution for low-durometer sealing requirements. Canyon Components offers equivalent NBR materials designed to match the temperature capability, hardness, and AMS 3201 compliance of Parker N0545-40.
Common relevant keywords:
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