... protects against the sharp edges of drilled or punched holes for wiring, cable, tubing, piping, hoses, air lines, rope and more ... , cars, trucks, trailers, electronic equipment, toys, bikes, RVs, boats, pumps, furniture and more.We produce rubber grommets in different shapes, sizes ... structure availableHardness: 30 to 80 Shore A Durometer Sealing ring with high quality