Product Description
Backup Rings
- Size#238 = 3-1/2 ID x 3-3/4 OD x 1/8 CS
- Back-up rings are used in conjunction with O-rings for both static and dynamic sealing applications. They prevent extrusion of the O-ring when it is subjected to high pressures, or when the extrusion gaps are excessive. Wherever possible two Back-up rings should be used, one on each side of the O-ring. Temperature range -58 F to 248 F with intermittent service to 600 F.
- Color Black
- 90 Durometer hardness
- Price is $0.47 each minimum purchase 2 pcs
