6black silicon rubber, shore hardness 40 porm 5, 1.250 in. O/a lg, 1.000 in., 0.331 in. O/a h, top is tapered from center of lg to one end from 0.625 thk to 0.005 in. Thk, mtg flange 0.625 in. Lg, 0.328 in. W, 0.125 in. Thk, spaced 0.081 in. Below top sec.