Backup Rings Buna Size 449 Price for 1 pc

Backup Rings

Size#449 – 10 ID x 10-1/2 OD x 1/4 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.

90 Durometer Rubber Nitrile

Price is each