FAB PISTON CUP 4 OD X 5/8 X 5/32
Buna-N (Nitrile) U-Cup U-Cup Seal with a 5/8 inch inside diameter, a 4 inch outside diameter, and a height of 5/32 inch. This u-cup seal uses a U-shaped profile that system pressure forces outward, tightening the seal as pressure rises.