Profile: Ningbo RuiBao Sealing Co., Ltd. is a supplier of rubber products such as rubber seals, gaskets, washers, rubber O-rings, rubber flat washers, and non-standard parts. Our products are made using NBR, NR, EPDM, Viton, SBR, CR, HNBR, and silicon. We offer custom flat heat-resisting EPDM washer with ozone resistance and high temperature aging resistance. Our washers are widely used in sealing air, water, or chemicals in machines, from dust & oil. We can supply many different kinds of gaskets which were made as fittings for hot-water heating & sanitary applications. Rubber products have a good resistance for water, oil, corrosion, high/low temperature, and are tensile.