
Image shown is representative and may differ from the actual product in size, proportions, and color shade
0.275 in
(6.99 mm)
3.975 in
(100.97 mm)

FKM Parker HF391-75 O-Ring, Size: -421
Material: FKM Parker HF391-75 O-Ring
Size: AS568 -421 O-Ring
Part Number: HF391-75-OR-421
Parker Seal® (Parker)
HF391-75
FKM (Viton®)
75
Shore A
HiFluor
Color: Blue
Detailed Description
HF391-75-OR-421 is a Blue, 75 Shore A, FKM (Viton®) O-Ring made from Parker Seal® (Parker). It is a 75 durometer FKM (Viton®). Parker Seal® (Parker) HF391-75 is manufactured with the following features & specifications: HiFluor. HF391-75-OR-421 is AS568 size -421 O-Ring also referred to as 6.99mm (Cross Sectional Diameter (CS)) x 100.97mm (Inside Diameter (ID)). Material: 75 Durometer FKM Parker HF391-75 O-Ring Size: AS568 -421, 6.99mm CS X 100.97mm ID (0.275" CS X 3.975" ID)
| Technical Specification | Value |
|---|---|
| Compound Number | HF391-75 |
| Brand | Parker Seal® (Parker) |
| Material | FKM (Viton®) |
| Color | Blue |
| Durometer | 75 Shore A Hardness |
| High Temperature | 191 °C / 376 °F |
| Low Temperature | -26 °C / -15 °F |
| Geometry Specifications | |
| Cross Sectional Geometry | O-Ring |
| Size Standard | AS568 |
| Size | -421 |
| Cross Section (CS) | 6.99 mm / 0.275 in |
| Inside Diameter (ID) | 100.97 mm / 3.975 in |
| Other Specifications | |
HiFluor | |


