Detailed Product Description We are the biggest mechanical seal producer in Shanghai,China. We have 3 factories, 400 ... compressors, agitator. Our seals include single spring seal, cartridge seal, metal bellows seal, dry gas seal.Our products can replace seals from John Crane ... , Burgmann,Chesterton,Flex A Seal, US Seal,AES, Roten,Depac, Billi,Sepco,etc.We wish to ...