The stuffing box is allowed to "float" on the shaft while the shaft weight is … ... replacing the aging shaft stuffing box. Dripless shaft seals offer a dry bilge without the drip-per minute of the traditional stern gland. If you yearn for the proverbial dusty bilge, a dripless stuffing box is likely the only way you will achieve this goal. CAUTION: Some stuffing boxes are rigidly attached to the hull, but most are connected to the shaft tube with a length of flexible hose. It offers the convenience of a PSS "dripless" yet adds the bullet proof reliability of a traditional stuffing box. If the adjusting nut does not turn easily, use a pipe wrench on the stuffing box flange — located just forward of the hose — to keep the box from turning with the nut. Step-by-step instructions for installing a dripless shaft seal or stuffing box. In an inboard propeller system, these two factors conflict with one another and create undesirable effects. I removed the PSS dripless seal from my boat last year and reinstalled a standard packing box. Answer: PYI recommends that the bellows be replaced once every 6 years on our PSS Type A seals, and every 8 to 10 years on our PSS PRO and Type B Seals. (4 mm) 2 footGFO fiber dripless packing is a braided propeller and rudder shaft packing that you can install and forget about. if it is buck algonquin then this is easy to do by wrapping something around the shaft to stop the water. A properly adjusted stuffing box won’t drip when the shaft is idle, but 2-3 drops/minute when the shaft is turning. First of all, there is no such thing as "dripless packing" on a PSS shaft seal; in fact, there's no packing at all. ease of repacking in the water could depend on what brand of stuffing box you have. The stuffing box prevents sea water from entering the boat's hull. Several “dripless shaft seal” devices are on the market, using either lip seals or face seals. Re-Packing A Traditional Stuffing Box. Dripless or not, all three types need water for lubrication and cooling. A lip seal is a synthetic rubber sleeve, contained in a metal housing, which fits The carbon is not directly threaded, the housing for it is instead allowing metal fittings to be used. All traditional stuffing boxes require water for lubrication and this "dripless" stuff totally plugged the area between the shaft and the male end of the of the stuffing box as seen in the picture. Recently had to replace the prop shaft on my Passport 37. Undo the clamps that hold the old stuffing box and its hose to the shaft tube, and slide the entire assembly up and off the shaft. There has been some discussion of PSS vs. a standard packing box on this forum. Whether your stuffing boxes are leaking or not, or whether you have "dripless" glands installed or not, never think that the shafts cannot be throwing water. In some cases, water inside the stern tube is adequate, but a pressurized source of water is generally required. Tides Marine - Marine industry manufacturer of the dripless or drip free, Self Aligning, SureSeal Shaft Seal, Rudder Bearings, Rudder Seals and SailTrack and Slide System. That would not have happened with a stuffing box. Enter the dripless shaft system. Dripless seals vs packing-gctid624480 02-07-2015, 04:42 PM. FYI there is some staining indicating your water pump might be beginning to wear, keep an eye on her. By their design, traditional stuffing boxes leak more water and allow more vibration than a properly installed dripless … Dripless Shaft Seal versus Stuffing Box. Proper stuffing box hose is built, as you say, of a large number of thick plies of super tough rubber and wire, very much like a car tire. I didn't like the idea of having to remove the shaft coupling for maintenance either. Water is required to lubricate conventional packing. If a stuffing box has worn a groove on the propeller shaft surface, it may be necessary to adjust the Tides blue hose that covers the stern tube (or the hose end … Well anyway, thats my a little of my experiences annd thoughts on the topic of dripless vs stuffing box types. I decided on just using the Teflon impregnated packing. Even with the female nut totally removed, in the water, I was getting, at best, 4 drips per minute with the nut off! You do not want to twist this hose or twist the stuffing box inside the hose. GFO Packing, 1/8 in. Lasdrop's Gen II Dripless Shaft Seal offers a unique ball-bearing drive system that allows the seal ring to "float" and remain in constant contact with the carbon graphite seal surface. I have had the stuffing box set up on my 1991 3288 and this boat came equipped with the PSS shaft seals. After 12 months and 200 engine hours with the GoreTex packing there is no drip. Seems like to be best of both options for me. Most of these units use what's called a face seal, with a flexible bellows attached to the stern tube (or stuffing box collar) that presses a fixed carbon/graphite flange against a rotating stainless-steel rotor which spins with the prop shaft, creating a seal between the rotor and flange. There are 2 types of stuffing box; 1 Traditional stuffing boxes. The result is a seal that's impenetrable to water. The common stuffing box is, to be hon-est, primitive. For ages now, traditional packing glands / stuffing boxes have served this purpose; the packing kept the ocean out… for the most part… and the small, steady leak worked to keep the packing cool, and prevent the shaft from scoring. I have also seen that port on the water pump used as an effective fresh water flush location. In this video I show how to maintain a traditional Stuffing Box/Shaft Seal. Most conventional stuffing boxes do not require the following modification, but if you cannot keep your box cool enough, you probably need it. I have the PSS dripless seals and really am tiring of them. The advertised lifetime of the packing is 10,000 hours so I'll never need to repack my stuffing box again. When I replaced my coupling, shaft and strut I debated between reusing my original stuffing box or an expensive dripless PSS type. The once-ubiquitous stuffing-box stern gland still has much in its favour – it’s simple, tried-and-tested and easy to repair and service. The traditional stuffing box gradually exhibits failure mode as more water gets in as packing wears away. In this video I show how to maintain a traditional Stuffing Box/Shaft Seal. They use heavy hose, exactly like a traditional stuffing box, and no set screws, they clamp like the collar in Maine sails photo instead. Two years ago after having the stuffing box adjusted 3 times in a year and running out of "room" for further adjustment I threw in the towel and had a PYI Inc PSS dripless shaft seal installed in my C30. Probably a higher pressure coming off the water pump vs the aftercooler. For this I chose Glide's Dripless Shaft Seal System (GMSS Kit) because its virtually maintenance free, its dripless, has a great reputation and it even ships in the new Malibus. Servicing Your Stuffing Box. Dripless Shaft Seals work great if the engine is perfectly aligned, the shaft is perfectly straight, the props are balanced and the seals are adjusted properly. To create an effective splash guard, the guard needs to completely surround the point where the shaft extends into the gland opening. 1) ... with a hump hose attaching to the hull shaft seal box … For my money i think you cant go past a well maintained and serviced packing type stern gland packed with the new GFO fibre . Pros and cons of dripless drive line shaft systems vs old school low drip rate stuffing boxes. also depending on original packing you may find it is totally rotten and it will fall apart while you are getting it out. You’ll rarely need to make any adjustments, and the Gore dripless packing will last for years. From time to time I will have 3 or 4 ounces of water under a shaft, maybe 2 or 3 times a month ?? I have seen some dripless applications spec a max psi so double check. One thing the OP may want to consider is our popular ISB-SA dripless shaft seal. But as with all things in the marine industry, a change was due. There are a number of manufacturers of dripless shaft seals, and therefore a variety of designs exist. If your boat has inboard power, odds are it is fitted with a stuffing box to provide a watertight seal for the propeller shaft. No grease, no mess.Just cut into 2 to 3 pieces to length (the length to make one wrap around your shaft) to form the rings and install them in the shaft stuffing box.Make maybe one adjustment to the packing gland following a short run-in and never tinker with the stuffing box again! 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. After 15 years of successfully handling demanding industrial pump applications, it's now proving itself in the marine field, too. Important tip for dripless shaft seals! The "box" is a cylindrical assembly, typically of bronze, comprising a sleeve threaded on one end to accept adjusting and locking nuts. Jump to Latest Follow 21 - 40 of 74 Posts. Re: dripless stuffing box... Really- some of you guys crack me up. In many small fiberglass boats, for example, the stuffing box is mounted inboard near the point the shaft exits the hull. WHY TIDES MARINE? Stuffing box replacement: traditional or dripless. The stuffing box assembly attaches to the shaft log with a length of hose and a pair of hose clamps. PBO checks out what’s available. Stuffing boxes are also used to seal rudder stocks that. Simpler, cheaper, and more robust than a dripless system and almost as good. Second, the stuffing box acts to support the weight of the shaft like a bearing. Solved the problem and also the spray/mist that occurs with excessive dripping of the stuffing box. The PSS Shaft Seal is the number one selling marine mechanical seal worldwide and is installed as standard equipment by many of the worlds most reputable boat builders / yards. Dripless vs Flax Stuffing Boxes: NOSOEWE: Gear & Maintenance: 15: 11-07-2009 07:31 PM: uni-fid vs traditional. On a trailered 22 foot Double ender, that will not alway be in the water, is it best to go with the new school shaft seal systems, or keep it simple and less expensive and build your own stuffing box. Sometimes it helps to support the shaft and propeller outside the boat. “Dripless” is the standard now, and there are several ways to achieve the happy status of a dry bilge. It is probably cheaper for Catalina to go with the traditional stuffing box then a dripless shaft seal. • Dripless operation • Keeps bilge dry • Replaces stuffing box … 1993 Sea Ray 200 Overnighter OB with 1993 Mercury 150 hp Outboard Dripless vs Flax Stuffing Boxes: NOSOEWE: Gear & Maintenance: 15: 11-07-2009 07:31 PM: uni-fid vs traditional. I love dripless shaft seals, but they are not without their issues and they are expensive. some other types might be a little more tricky. At Tides, providing excellent customer service is our no. It consists of a threaded sleeve and a hollow nut, through which the prop shaft passes. Since 1991, Tides Marine has provided essential marine components to the marine industry. At least one dripless stuffing box manufacturers prohibits the use of ozone generators with their products, take heed to this warning, I’ve witnessed the damaging effects of these devices on rubber and plastic components. What general maintenance should I be considering for a PSS Shaft Seal that is working with no apparent issues? Cheaper, and more robust than a dripless stuffing box also seen that on!, it 's now proving itself in the marine industry, a dripless stuffing …. May find it is totally rotten and it will fall apart while you are getting it.. Threaded, the stuffing box … that would not have happened with a length of hose.... Reinstalled a standard packing box on this forum depend on what brand stuffing. 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