YOUFEN Multi Purpose Rubber 3/8″ID x 1″OD x 1/2″ Thickness, black or gray
Premium Material: Made of quality neoprene rubber, the rubber washer is sturdy, flexible and wear resistant. Sealing Function: Rubber spacer is ideal for sealing and leak proof performance. The rubber washers can effectively against leakage, reduce the vibrations by absorbing the shock to a certain extent.