... 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 ... VT6-280 etc .2. Wide range size for different bran engine. Cummins, Hino, Mitsubishi, Yamaha, Benz, Deutz, Komatsu, Caterpillar, ...