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Buna Back-up Rings
Backup rings are designed to keep o-rings from rolling or extruding out from the groove. Backup rings are also used for U-Cups applications.
Shipping $3.75 on all orders under $15 in the USA
Orders over $15 SHIP FREE first class USPS in the USA
Orders of $50 or more SHIP FREE Priority 2-3 day in the USA