Large Rubber Grommet For 1/8" Panel Thickness --- Inner Diameter 1 1/2" --- Outer Diameter 2 1/8" --- Overall Thickness 1/2" --- For Panel Thickness 1/8" --- For Panel Hole Diameter 1 3/4" --- --- Used to Insulate and seal around holes cut in solid panels ---- Also Used to dampen vibration and minimize abrasion. ---- Durometer hardness 50A. ---- For Indoor Use Only ---- Color is black. ---- Flexible grommets made of Buna-N rubber ----- Temperature range 0° to +250° F.