Image shown is representative and may differ from the actual product in size, proportions, and color shade
1.310 in
(33.27 mm)
4.880 in
(123.95 mm)
4
0.750 in
(19.05 mm)
3.500 in
(88.90 mm)
1/4"
NBR Parker NA155-80 Full Face Gasket, Size: 300#-1"-FF-1/4"
Material: NBR Parker NA155-80 Full Face Gasket
Size: 300#-1"-FF-1/4" Full Face Gasket
Part Number: NA155-80-300#-1"-FF-1/4"
Color: Black
Detailed Description
NA155-80-300#-1"-FF-1/4" is a Black, 80 Shore A, NBR (Nitrile, Buna-N) Full Face Gasket made from Parker Seal® (Parker). It is a 80 durometer NBR (Nitrile, Buna-N). Parker Seal® (Parker) NA155-80 is manufactured with the following features & specifications: General Purpose Material. NA155-80-300#-1"-FF-1/4" is size 300#-1"-FF-1/4" Full Face Gasket also referred to as 1 (Pipe Size) x 33.27mm (ID) x 123.95mm (OD) x 4 (Bolt Qty) x 19.05mm (Bolt Dia.) x 88.9mm (Bolt Circle) x 1/4" (Thickness). NA155-80-300#-1"-FF-1/4" is a size 1, 300#-FF ASME Ring Gasket. Material: 80 Durometer NBR Parker NA155-80 Full Face Gasket Size: 300#-1"-FF-1/4", 1 Pipe Size X 33.27mm ID X 123.95mm OD X 4 Bolt Qty X 19.050mm Bolt Dia. X 88.900mm Bolt Circle X 1/4" Thickness
| Technical Specification | Value |
|---|---|
| Compound Number | NA155-80 |
| Brand | Parker Seal® (Parker) |
| Material | NBR (Nitrile, Buna-N) |
| Color | Black |
| Durometer | 80 Shore A Hardness |
| High Temperature | 121 °C / 250 °F |
| Low Temperature | -32 °C / -26 °F |
| Geometry Specifications | |
| Type | Full Face Gasket |
| Size | 300#-1"-FF-1/4" |
| Pipe Size | 1 |
| ID | 33.27 mm / 1.310 in |
| OD | 123.95 mm / 4.880 in |
| Bolt Qty | 4 |
| Bolt Dia. | 19.05 mm / 0.750 in |
| Bolt Circle | 88.90 mm / 3.500 in |
| Thickness | 1/4" |
Parker’s NA155-80 is an 80 Shore A black nitrile rubber (NBR) compound designed as a general-purpose sealing material for industrial and fluid-handling applications. Operating across a service temperature range of -25°F to 250°F, it provides dependable sealing performance with good compression set resistance and mechanical stability under load. 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 hydraulic and general machinery uses. Its higher durometer improves extrusion resistance compared to softer nitrile grades, supporting reliable performance in static and moderate dynamic O-rings and gaskets.
NA155-80 is commonly used in pumps, valves, cylinders, and industrial equipment where cost-effective oil resistance and durability are required. It is not recommended for aromatic fuels, strong acids, glycols, ozone exposure, or polar solvents. This material offers a practical balance of hardness, oil compatibility, and temperature capability for everyday sealing needs. Canyon Components offers equivalent NBR materials engineered to match the hardness, temperature range, and general-purpose performance of Parker NA155-80.
Common relevant keywords:
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