... ,Refrigeration Compressor in air conditioning, etc.3. Main products: O-Ring.X-Ring V-Ring.R-Ring. Y ... Ring.U-Ring., Oil Seal,PU oil seals , rubber flat washers, rubber Circles, Gaskets, engine parts and accessories,compression mold ... or as per client's requirement.6. Colour: red ,white,black ,blue ,yellow,green ,brown ,etc.7. Standard: ... but o-ring's mold fee is free. rubber products and accessories