Uxcell Rubber O-Ring Oil Seal Sealing Ring Gaskets (10 Piece), Red, 80mm x 2.5mm Product name : Oil seal O ring; material : rubber External diameter : 80Mm/3. 1"; inner diameter : 75Mm/2. 95" Thickness : 2. 5Mm/0. 1''; color : Red Weight : 16G Package Content : 10 x Oil seal O rings