PU15X43X15-2RS PU Covered Bearing 15x43x15mm - Sealed - MiniaturePU15X43X15 2RS Polyurethane Rubber PU15X43X15 2RS Polyurethane Rubber Bearing with tire 15x43x15mm Sealed Miniature PU15X43X15 2RS Polyurethane Rubber sealed Ball Bearing 15mm x 43mm x 15mm Polyurethane ( PU) is a new type of polymer composite materials between rubber and plastic, offering higher load bearing capacity compared to plastic, polyurethane offer superior impact resistance, while good mechanical properties. Polyurethane have better abrasion