... & ODM welcomed. Valve Seat Ring1. Engine parts valve seat ring is used for different egines, Automobiles, Marines, Air ... compressors, Engineering machines engine...etc.Engine Type: 6BT, 6CT, ... .2. Wide range size for different bran engine. Cummins, Hino, Mitsubishi, Yamaha, Benz, Deutz, Komatsu, Caterpillar, Perkins, Volvo, Kia, ...