Backup Rings Buna Size 270 Price for 1 pc

Backup Rings

Size#270 = 9 ID x  9-1/4 OD x  1/8 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

90 Durometer hardness

Price is for each