With large-scale factories, Xingtai Longcheng Sealing Co., Ltd. is fully confident in its production of soft silicone rubber washers. The production starts from the most comprehensive R&D work in the industry. We use top quality NBR, FKM, and EPDM and control the quality of each batch to intl standards. We have R&D teams in molding and mixing to design and formulate optimized compounds for performance, as well as molds for precise applications of washers. With large-scale factories that provide a large stock and molds, we fully serve over 300 clients from 100 countries. Our passion for customization offers new market dimensions and we have confidence in the product quality and customization of all clients, leaving no expectations unfulfilled.