Backup Rings Buna Size 173 Price for 1 pc

Backup Rings 

 

Size#173 = 8-1/2 ID x 8-11/16 OD x 3/32 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. Temperature range -58 F to 248 F with intermittent service to 600 F. Color Black

90 Durometer hardness

Price is each