Wisconsin Parts Database Instructions and Discussion Team/Group > ILLINOIS
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> Backup rings size 117 price for 25 pcs
Backup rings size 117 price for 25 pcs
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