We are the professional seal manufacturer in China�We produce all kind of seal products, including:O-ring, X-ring, back up ring, U-ring, V-ring, oil seal, bonded seal, PTFE o ring, PTFE gasket, PTFE ball and so on. Compare other seal factory, our main advantage is as follow: 1)All of our material are bought from the biggest rubber supplier such as Du pond, Bayer, Dow Corning, the high quality material ensure the high quality of our seal product. Especial, our factory produce the FFKM O ring, the temperature resistance is high to ***** property is very excellent. 2)We have more than 200 worker who have many years experience in the seal production, their practiced operation and experience can ensure our seal in high quality too. 3)We have our own mold factory, so, the cost of our opening mold is much lower than other seal factory.We have all the molds for AS-568, BS1516, ***** can choose any size you need. Expecially, for the non-standard O ring, we can produce any size and any quantity for our client without demanding the tooling charge. For more information, welcome to our website to have a look, our website is: ***** Should any of these seal items be of interest to you, please let us know. We will be happy to give you a quotation upon receipt of your detailed requirements.