O-Rings, Custom Rubber Parts, Rubber Balls manufacturer / supplier in China, offering Polyurethane Sealing Balls 80-90 Shore a Long-Lasting Rubber Spheres with High Tensile Strength (3, 000 psi) for Heavy-Duty Industrial Machinery, PU Rubber Balls with Exceptional Tear Resistance & Shock Absorption Durable Polyurethane Spheres for High-Tension Pumps, Valves & Screen Deblinding, High Strength Abrasion-Resistant Polyurethane Rubber Balls 80 Shore a Wear-Resistant Sealing Spheres for Marine, Aviation & Industrial Applications and so on.