Quick view Piston U-Cup 63mm OD x 50mm ID x 10mm Seal Price for 1 pc Metric Piston U-Cup Seal Piston U-Cup Seal 63mm OD x 50mm ID x 10mm HT Lower Outer Lip Typically used on the Piston Buna Nitrile Rubber Seal Up to 5800 PSI applications Price is for 1 pc MSRP: Was: Now: $9.00 Add to Cart Compare