CHU HUNG OIL SEALS INDUSTRIAL CO., LTD.We were certified QS9000,ISO 9001 in year of 2000 to provide top quality of products to our customers.Our products range include OIL SEALS, BONDED SEALS (WASHER SEALS), VALVE STEM SEALS, O-RINGS, PISTON SEALS, HYDRAULIC SEALS, & PACKING RUBBER PARTS.