What is the purpose of stuffing box?
A stuffing box or gland package is an assembly which is used to house a gland seal. It is used to prevent leakage of fluid, such as water or steam, between sliding or turning parts of machine elements.
How do stuffing boxes work?
All stuffing boxes work on the same basic principle: Rings of special wax-impregnated flax packing are wrapped snugly around the prop shaft and stuffed into a hollow packing nut that is screwed to the outside of the stuffing box housing. Extend shaft life. Less opportunity for crevice corrosion.
What are the three main parts of a simple stuffing box?
There are three main components to a traditional stuffing box: the stuffing box body, the compression sleeve, and some method of locking the compression sleeve in place.
What is engine stuffing box?
In diesel engines , stuffing box is found in the bore for the piston rod in the bottom of the scavenge air box. The stuffing box prevents the entry of lubricating oil from the crankcase into the scavenge air space. It also prevents the leaking of air from scavenge space to the crankcase.
What is gasket gland?
The Friction Washer fits between the Compression Gland Screw and the Compression Gland Insert. It simply keeps the metal from rubbing and chafing. If you need a replacement, contact us directly. Maintenance for the Compression Gland is simple but necessary.
How tight should a stuffing box be?
The packing should be snug but not overly tight. If you have to hammer it in then it’s much too tight. You should be able to press it in without a great deal of difficulty. But there should be some friction so it is not flopping around loosely, either.
What is a Marine stuffing box?
A stuffing box—also called a stuffing gland, packing gland or packing box—forms a seal between the prop shaft and the hole in the hull through which the shaft passes while allowing the shaft to turn freely. It consists of a threaded sleeve and a hollow nut, through which the prop shaft passes.
What kind of hose is used for stuffing boxes?
While it may look ordinary, the hose used with conventional stuffing boxes is, or should be, proprietary. Ordinary raw water or exhaust hose may utilize three or four plies, while proprietary stuffing box hose incorporates five plies.
How is a stuffing box attached to a ship?
A special purpose heavy-duty rubber hose attaches the stuffing box to a stern tube, also called a shaft log, that projects inward from the hull. Marine-duty hose clamps secure the hose to the stern tube and the aft portion of the stuffing box sleeve.
How often should you replace stuffing box hose?
If this rubber hose cracks, deteriorates or starts leaking, it can sink your boat. Most references suggest replacing the rubber stuffing box hose every seven to ten years. If you happen have your shaft out, this makes for an opportune time to replace your stuffing box hose as well. The thicker hose on top is specifically made for stuffing boxes.
What do you call a work horse stuffing box?
I though it would be a good time to rig it up in my shop and illustrate how to replace the packing material inside one of these tried & true work horse style stuffing boxes. Stuffing boxes are also called stuffing glands, packing glands or packing boxes but they are really all the same thing.