
Image shown is representative and may differ from the actual product in size, proportions, and color shade
0.157 in
(4.00 mm)
3.425 in
(87.00 mm)

NBR NB50BK28 O-Ring, Size: 4X87
Material: NBR NB50BK28 O-Ring
Size: Metric 4X87 O-Ring
Part Number: NB50BK28-OR-4X87
Color: Black
Detailed Description
NB50BK28-OR-4X87 is a Black, 50 Shore A, NBR (Nitrile, Buna-N) O-Ring. It is a 50 durometer NBR (Nitrile, Buna-N). NB50BK28 is manufactured with the following features & specifications: General Purpose Material. NB50BK28-OR-4X87 is Metric size 4X87 O-Ring also referred to as 4mm (Cross Sectional Diameter (CS)) x 87mm (Inside Diameter (ID)). Material: 50 Durometer NBR NB50BK28 O-Ring Size: Metric 4X87, 4mm CS X 87mm ID (0.157" CS X 3.425" ID)

| Technical Specification | Value |
|---|---|
| Compound Number | NB50BK28 |
| Material | NBR (Nitrile, Buna-N) |
| Color | Black |
| Durometer | 50 Shore A Hardness |
| High Temperature | 135 °C / 275 °F |
| Low Temperature | -55 °C / -67 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | Metric |
| Size | 4X87 |
| Cross Section (CS) | 4.00 mm / 0.157 in |
| Inside Diameter (ID) | 87.00 mm / 3.425 in |


