... machining parts. 4. OEM & ODM welcomed. Valve Seat Ring1. Engine parts valve seat ring is used for different egines, Automobiles, Marines, Air compressors, Engineering ... , V300, V6E-195, VT6-280 etc .2. Wide range size for different bran engine. Cummins, Hino, Mitsubishi, Yamaha, Benz, Deutz, Komatsu ... .Anything new development are welcomed to be provided according to the drawings or samples.