This is a closed cell sponge neoprene that will not absorb water or oil. It is often referred to as weather stripping or rubber sealing and is primarily used as sealing tape to block air, dust and moisture. Neoprene stripping is used for store fixtures, noise insulation, padding, expansion joints of precast concrete and steel, HVAC & refrigeration, and is an excellent door seal for truck and bus bodies. Simply peel back the liner to expose the adhesive on one side and apply to metal, plastic, wood and other smooth surfaces. There may be a tolerance of up to +/- 3/8 from the stated size.