SHUT OFF SEAL ABOUT A SHAFT OF A DEVICE HAVING A SIDE ENTRY INTO A TANK

摘要

A shut off seal in a device having a rotatable shaft extending through a nozzle side entry structure of a tank is provided by means of a slidable stuffing box housing which can be moved by jack screws or similar means into engagement with a sealing collar fastened to the shaft inboard of the housing. The arrangement enables the changing of the packing about the shaft without draining the tank.