Cast polymers offers a range of polymer products. Pipe clamps in polymers include the following range: light duty, pipe sizes 5 mm to 100 mm, material used is polypropylene. For heavy duty pipe sizes 6 mm to 50 mm, the material used is nylon and epdm rubber. Advantages: absorbs shock, prevents leakage, less vibration and clamping together a number of pipes is possible.