
CS
0.139 in
(3.53 mm)
ID
1.359 in
(34.52 mm)

NBR NB70BK21 O-Ring, Size: -220
Material: NBR NB70BK21 O-Ring
Size: AS568 -220 O-Ring
Part Number: NB70BK21-OR-220
NB70BK21
NBR (Nitrile, Buna-N)
70
Shore A
MOS2 Filled
Sulfur Cured
Color: Black
Detailed Description
NB70BK21-OR-220 is a Black, 70 Shore A, Sulfur Cured NBR (Nitrile, Buna-N) O-Ring. NB70BK21 is manufactured with the following features & specifications: MOS2 Filled. NB70BK21-OR-220 is AS568 size -220 O-Ring also referred to as 3.53mm (Cross Sectional Diameter (CS)) x 34.52mm (Inside Diameter (ID)).
Material: NBR NB70BK21 O-Ring
Size: AS568 -220, 3.53mm CS X 34.52mm ID (0.139" CS X 1.359" ID)

| Technical Specification | Value |
|---|---|
| Compound Number | NB70BK21 |
| Material | NBR (Nitrile, Buna-N) |
| Cure | Sulfur Cured |
| Color | Black |
| Durometer | 70 Shore A |
| High Temperature | 125 °C / 257 °F |
| Low Temperature | -35 °C / -31 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | AS568 |
| Size | -220 |
| Cross Section (CS) | 3.53 mm / 0.139 in |
| Inside Diameter (ID) | 34.52 mm / 1.359 in |

