Rubber Bushing Designed to line or pad holes in materials to protect inserted items from abrasion and insulate them.
Most commonly used to protect tubing, wires, lines, and piping from metal walls.
Also used with bonded metal sleeves to attach moving parts to frames, axles to trailers, drive shafts to tracks, etc.

Material: SBR, Neoprene, Nitrile, Natural Rubber, EPDM, Silicone.