Image shown is representative and may differ from the actual product in size, proportions, and color shade
0.157 in
(4.00 mm)
2.205 in
(56.00 mm)
ACM Parker AA154-75 O-Ring, Size: 4X56
Material: ACM Parker AA154-75 O-Ring
Size: Metric 4X56 O-Ring
Part Number: AA154-75-OR-4X56
Color: Black
Detailed Description
AA154-75-OR-4X56 is a Black, 75 Shore A, ACM (Acrylic Rubber) O-Ring made from Parker Seal® (Parker). It is a 75 durometer ACM (Acrylic Rubber). Parker Seal® (Parker) AA154-75 is manufactured with the following features & specifications: General Purpose Material. AA154-75-OR-4X56 is Metric size 4X56 O-Ring also referred to as 4mm (Cross Sectional Diameter (CS)) x 56mm (Inside Diameter (ID)). Material: 75 Durometer ACM Parker AA154-75 O-Ring Size: Metric 4X56, 4mm CS X 56mm ID (0.157" CS X 2.205" ID)
| Technical Specification | Value |
|---|---|
| Compound Number | AA154-75 |
| Brand | Parker Seal® (Parker) |
| Material | ACM (Acrylic Rubber) |
| Color | Black |
| Durometer | 75 Shore A Hardness |
| High Temperature | 177 °C / 351 °F |
| Low Temperature | -21 °C / -6 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | Metric |
| Size | 4X56 |
| Cross Section (CS) | 4.00 mm / 0.157 in |
| Inside Diameter (ID) | 56.00 mm / 2.205 in |
Parker’s AA154-75 is a 75 Shore A black polyacrylate (ACM) compound developed for oil-exposed sealing applications requiring enhanced hardness and dimensional stability. With a recommended service temperature range of -5°F to 250°F, it performs reliably in contact with mineral oils such as engine oil, gearbox lubricants, and automatic transmission fluids. This compound offers strong resistance to ozone, weathering, and thermal aging, making it well suited for automotive and industrial environments where heat and oil exposure are persistent. Its higher durometer compared to standard ACM grades provides improved extrusion resistance in both static and moderate dynamic sealing conditions.
AA154-75 meets ASTM D2000 M2DH710 requirements and is commonly selected where oil resistance and mechanical robustness are critical. It is not recommended for glycol-based brake fluids, aromatic or chlorinated hydrocarbons, hot water, steam, acids, alkalis, or amines. Canyon Components offers equivalent ACM materials that match or exceed the performance of Parker AA154-75 for oil-resistant, heat-stable sealing applications.
Common relevant keywords:
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