
Image shown is representative and may differ from the actual product in size, proportions, and color shade
0.139 in
(3.53 mm)
5.859 in
(148.82 mm)

NBR NB70BK40 X-Ring, Size: -257
Material: NBR NB70BK40 X-Ring
Size: AS568 -257 X-Ring
Part Number: NB70BK40-XR-257
Color: Black
Detailed Description
NB70BK40-XR-257 is a Black, 70 Shore A, NBR (Nitrile, Buna-N) X-Ring. It is a 70 durometer NBR (Nitrile, Buna-N). NB70BK40 is manufactured with the following features & specifications: UL 157, UL Listed Material. NB70BK40-XR-257 is AS568 size -257 X-Ring also referred to as 3.53mm (Cross Sectional Diameter (CS)) x 148.82mm (Inside Diameter (ID)). Material: 70 Durometer NBR NB70BK40 X-Ring Size: AS568 -257, 3.53mm CS X 148.82mm ID (0.139" CS X 5.859" ID)

| Technical Specification | Value |
|---|---|
| Compound Number | NB70BK40 |
| Material | NBR (Nitrile, Buna-N) |
| Color | Black |
| Durometer | 70 Shore A Hardness |
| Geometry Specifications | |
| Cross Sectional Geometry | X-Ring |
| Size Standard | AS568 |
| Size | -257 |
| Cross Section (CS) | 3.53 mm / 0.139 in |
| Inside Diameter (ID) | 148.82 mm / 5.859 in |
| Other Specifications | |
UL 157 | |
UL Listed Material | |


