NEO NE60BK51 O-Ring, Size: -018
Material: NEO NE60BK51 O-Ring
Size: AS568 -018 O-Ring
Part Number: NE60BK51-OR-018
NE60BK51
Neoprene® (Chloroprene)
60
Shore A
MIL-R-6855 Class 2 Grade 60
Color: Black
Detailed Description
NE60BK51-OR-018 is a Black, 60 Shore A, Neoprene® (Chloroprene) O-Ring. NE60BK51 is manufactured with the following features & specifications: MIL-R-6855 Class 2 Grade 60. NE60BK51-OR-018 is AS568 size -018 O-Ring also referred to as 1.78mm (Cross Sectional Diameter (CS)) x 18.77mm (Inside Diameter (ID)).
Material: NEO NE60BK51 O-Ring
Size: AS568 -018, 1.78mm CS X 18.77mm ID (0.070" CS X 0.739" ID)

| Technical Specification | Value |
|---|---|
| Compound Number | NE60BK51 |
| Material | Neoprene® (Chloroprene) |
| Color | Black |
| Durometer | 60 Shore A |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | AS568 |
| Size | -018 |
| Cross Section (CS) | 1.78 mm / 0.070 in |
| Inside Diameter (ID) | 18.77 mm / 0.739 in |
| Other Specifications | |
MIL-R-6855 Class 2 Grade 60 | |
NE60BK51 is Canyon’s MIL-R-6855 compliant 60 Shore A black Neoprene (CR) compound engineered for O-rings and gaskets requiring reliable low-temperature performance and superior compression set resistance. This material offers good resistance to weathering, moderate heat, and low-temperature solvents and refrigerants, supporting consistent sealing in aerospace, military, and industrial environments. With a service temperature range of -40°C to 125°C (-40°F to 257°F), NE60BK51 maintains elasticity and sealing force through temperature cycling in static and light dynamic applications. Its mid-range durometer balances conformability with improved extrusion resistance for dependable long-term service. Compare NE60BK51 to Parker C1124-70 for similar specification-driven, low-temperature Neoprene sealing performance.
NE60BK51 meets ASTM D2000 5BC610 requirements and MIL-R-6855 Class 2, Type A and B, Grade 60, making it suitable for qualified programs that require documented compliance and repeatable material properties. This compound is commonly selected for applications prioritizing cold-service capability, environmental durability, and value without transitioning to higher-cost fluorinated elastomers.
Common relevant keywords:
MIL-R-6855 Neoprene, 60 Shore A CR O-rings, low temperature Neoprene gaskets, military grade Neoprene seals, compression set resistant CR rubber, aerospace Neoprene elastomer, refrigerant compatible Neoprene, ASTM D2000 Neoprene compound, cold service rubber O-rings, Parker C1124-70 equivalent, Datasheet, TDS, Test Report, MTR, MSDS, SDS


