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We are Fujian COS Plastic & Rubber Co. , Ltd. A leading oil seal manufacturer in China. We have over 15 years experience in producing rubber products. Also we are able to make new ones base on customer’s sample or drawing. All parts we make base on TS16949. We have confidence COS can be your best supplier, your best OEM in the rubber products. Our parts including: Hydraulic seals, Pneumatic seals, Rotary Shaft Seals, Oil Seals, O-Ring, Valve Stem Seal, PTFE oil seal, Axle Seals,Rubber Grommet