NEO Parker C0557-70 O-Ring, Size: -020
Material: NEO Parker C0557-70 O-Ring
Size: AS568 -020 O-Ring
Part Number: C0557-70-OR-020
Parker Seal® (Parker)
C0557-70
Neoprene® (Chloroprene)
70
Shore A
Drive Belt
General Purpose Material
Color: Black
Detailed Description
C0557-70-OR-020 is a Black, 70 Shore A, Neoprene® (Chloroprene) O-Ring made from Parker Seal® (Parker). Parker Seal® (Parker) C0557-70 is manufactured with the following features & specifications: Drive Belt, General Purpose Material. C0557-70-OR-020 is AS568 size -020 O-Ring also referred to as 1.78mm (Cross Sectional Diameter (CS)) x 21.95mm (Inside Diameter (ID)).
Material: NEO Parker C0557-70 O-Ring
Size: AS568 -020, 1.78mm CS X 21.95mm ID (0.070" CS X 0.864" ID)
| Technical Specification | Value |
|---|---|
| Compound Number | C0557-70 |
| Brand | Parker Seal® (Parker) |
| Material | Neoprene® (Chloroprene) |
| Color | Black |
| Durometer | 70 Shore A |
| High Temperature | 121 °C / 250 °F |
| Low Temperature | -37 °C / -35 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | AS568 |
| Size | -020 |
| Cross Section (CS) | 1.78 mm / 0.070 in |
| Inside Diameter (ID) | 21.95 mm / 0.864 in |
| Other Specifications | |
Drive Belt | |
The Parker C0557-70 Neoprene (Chloroprene, CR) compound is a 70 durometer black elastomer developed for general-purpose O-rings and gaskets used in industrial and automotive applications. It offers a dependable balance of oil, weather, and aging resistance with good flexibility across its service range of -35°F to 250°F. The compound performs well with paraffin-based mineral oils, silicone lubricants, water, ammonia, and refrigerants, making it suitable for drive belt and machinery sealing environments. Its resistance to ozone and outdoor exposure allows for long-term performance in varied operating conditions.
C0557-70 meets ASTM D2000 M3BC710 standards, ensuring consistent material quality and mechanical strength. While versatile, it is not recommended for use with aromatic hydrocarbons, chlorinated hydrocarbons, or polar solvents such as ketones and esters. This Neoprene formulation provides a reliable, cost-effective solution for applications requiring durability, chemical stability, and environmental resistance.