a device that prevents leakage along a piston, rod, propeller shaft, or other moving part that passes through a hole in a cylinder or vessel. It consists of a box or chamber made by enlarging the hole and a gland containing compressed packing. On a well being artificially lifted by means of a sucker rod pump, the polished rod operates through a stuffing box, preventing escape of oil and diverting it into a side outlet to which is connected the flow line leading to the oil and gas separator or to the field storage tank. For a bottomhole pressure test, the wireline goes through a stuffing box and lubricator, allowing the gauge to be raised and lowered against well pressure. The lubricator provides a pressure-tight grease seal in the stuffing box.
The part of a machine or cylinder in which seals or packing is installed to prevent leakage.
a small chamber in which packing is compressed around a reciprocating shaft or piston to form a seal
The annular chamber provided around a valve stem in a sealing system into which deformable packing is placed. Sometimes called packing chamber.
a short sleeve with a bore in the centre through which a piston rod passes; pressure tightness between the rod and the sleeve is obtained by compressing packing or fibrous material with a retaining gland; used in machinery to prevent escape of steam or water
a metal tube, often stuffed with grease, that supports the driveshaft and seals the hull.
A dimensionally-controlled chamber surrounding a shaft penetration into a damper frame into which packing may be installed to seal around the shaft.
A fitting around the propeller shaft to keep the bearing lubricated and to keep water out of the boat.
A stuffing box (or packing gland) is a type of seal placed around a propeller shaft at the point it exits a boat's hull underwater. It is the most common method for preventing water from entering the hull while still allowing the propeller shaft to turn.
