... engine valve seat ring 2. ISO 9001-2000 3. Quality casting and machining parts. 4. OEM & ODM welcomed. Valve Seat Ring1. Engine parts valve ... seat ring is used for different egines, Automobiles, Marines, Air compressors, Engineering machines engine...etc.Engine ... 280 etc .2. Wide range size for different bran engine. Cummins, Hino, Mitsubishi, Yamaha, Benz, Deutz, ...