Profile: Ningbo RC Industry Co. Ltd. develops and markets mechanical seals, gaskets, O-rings, gland packing and other sealing materials. We offer robust rubber bellows seals, with a wide non-DIN cross-section, for optimum flexibility and durability. Our O-ring features conical spring seal with pressed stainless seal head retainer and pressed carbon seat. We provide coolant pump seal primarily utilized in combustion engine water pumps.