NBR NB70BK26 O-Ring, Size: -211
Material: NBR NB70BK26 O-Ring
Size: AS568 -211 O-Ring
Part Number: NB70BK26-OR-211
NB70BK26
NBR (Nitrile, Buna-N)
70
Shore A
Low Temperature Material
Color: Black
Detailed Description
NB70BK26-OR-211 is a Black, 70 Shore A, NBR (Nitrile, Buna-N) O-Ring. It is a 75 durometer NBR (Nitrile, Buna-N). NB70BK26 is manufactured with the following features & specifications: Low Temperature Material. NB70BK26-OR-211 is AS568 size -211 O-Ring also referred to as 3.53mm (Cross Sectional Diameter (CS)) x 20.22mm (Inside Diameter (ID)).
Material: 70 Durometer NBR NB70BK26 O-Ring
Size: AS568 -211, 3.53mm CS X 20.22mm ID (0.139" CS X 0.796" ID)
| Technical Specification | Value |
|---|---|
| Compound Number | NB70BK26 |
| Material | NBR (Nitrile, Buna-N) |
| Color | Black |
| Durometer | 70 Shore A Hardness |
| High Temperature | 125 °C / 257 °F |
| Low Temperature | -55 °C / -67 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | AS568 |
| Size | -211 |
| Cross Section (CS) | 3.53 mm / 0.139 in |
| Inside Diameter (ID) | 20.22 mm / 0.796 in |
NB70BK26 is Canyon’s ultra-low temperature, 70 Shore A black nitrile rubber (NBR) compound engineered for O-rings and gaskets used in cold-service industrial sealing applications. This material delivers improved low-temperature flexibility compared to standard nitrile grades while maintaining good abrasion resistance and low compression set for reliable long-term sealing. With a service temperature range down to -55°C (-67°F), NB70BK26 remains elastic during cold starts and temperature cycling in oil-handling and general industrial environments. It is widely selected when dependable nitrile performance is required at temperatures where conventional NBR compounds begin to stiffen. Compare NB70BK26 to Parker N0103-70, N0602-70, N1470-70, and NA151-70 for similar low-temperature 70 Shore A nitrile applications.
NB70BK26 meets ASTM D2000 5BG720 requirements and is commonly used in pumps, valves, hydraulic components, and outdoor equipment exposed to cold climates. Its balanced mechanical properties support consistent sealing in static and light dynamic service without the cost of specialty elastomers. Canyon Components offers NB70BK26 as a cost-effective solution for low-temperature nitrile O-rings and gaskets where flexibility, durability, and value are key design considerations.
Common relevant keywords:
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