Bock Compressor FK40 Shaft Seal: 1) It suit for FKX40-650,560,470,390 2) Long durability. 3) Strict Quality Control system. Bock Air Conditioning Compressor FK40 Shaft Seal1) Long life & high quality assurance2) Applicable models: FKx40-390N, FKx40-470N,FKx40-560N,FKx40-650N FKx40-390K, FKx40-470K,FKx40-560K.FKx40-650K3) All production processes are strictly controlled in accordance with ISO ...