Backup Rings Buna Size 379 Price for 1 pc

Backup Rings

SIZE#379 =  11 ID x 11-3/8 OD x 3/16 CS

Back-up rings are used in conjunction with O-ring 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.

Color Black

Price is  each