PU Wheels. Polyurethane is the hardest of all plastic products and can be molded into just about any shape, making these popular Heavy Duty PU Wheels perfect for a variety of applications, including office chair casters. Thanks to their hard polyurethane material, these Yellow PU Wheels can support extreme loads. Rubber PU Wheels are built to last.Red PU Wheels are constructed from Polyurethane (PU), which makes them more durable and elastic than other wheels on the market. Polyurethane (PU) wheels have a natural ability to absorb any shock taken during transportation, making them ideal for industrial use. Our customer-centric approach and sound capabilities enable us to offer Rubber PU Wheels. These Yellow PU Wheels are made of injection moulded polyurethane by our expert manpower. In various industrial equipment and trolleys, our wheels are used for smooth mobility and to prevent scratches to the floor. Polyurethane Wheels Offers Specification: Long Service Life High load bearing cap