8-425ST
PTFE O-Ring Back-Up, 4.551 X 5.023 X 0.236, Dash# 425
Part #:
8-425ST
Min. Order Qty: 1
Brand: HPSI
HPSI
PTFE O-ring Back-up Rings are designed to improve sealing performance in high-pressure and high-temperature applications. Sized according to standard ASTM 568 O-ring dash numbers, these back-ups feature a concave profile for superior support over 90A Buna rings. Ideal for preventing O-ring extrusion, they enhance sealing efficiency in demanding conditions. Available in solid (SOLT) and split (ST) designs, with spiral PTFE back-ups available upon request.
| Construction | : | Split |
| Dash Number | : | -425 |
| Inside Diameter | : | 4.551 in |
| Material | : | PTFE |
| Outside Diameter | : | 5.023 in |
| Part Number | : | (Prefix)-(O-Ring Dash#)(Construction) |
| Temperature Range | : | -40° to 500°F |
| Width | : | 0.236 in |
- Enhances O-ring performance in high-pressure applications
- Performs in elevated temperatures
- Concave profile
- Available in solid, split, and spiral styles
- Compatible with standard AS568 O-ring dash numbers
