O-ring - our outstanding advantages 1) inventory, supply timely: NBR generally have the cash, fluorine rubber, silicone, EPDM, also have a lot of inventory, timely supply for you. 2) We have more than 5,000 deputy dies, including national standards and non-standard, the true sense did complete specifications. 3) can be tailored to various seals according to your needs, and the O-ring does not charge mold fee. 4) High quality rubber material: we select all imported glue material, the quality is absolutely trustworthy. 5) Price: We can do it at the lowest price of imported products.