Water is required to lubricate conventional packing. After 15 years of successfully handling demanding industrial pump applications, it's now proving itself in the marine field, too. I didn't like the idea of having to remove the shaft coupling for maintenance either. By their design, traditional stuffing boxes leak more water and allow more vibration than a properly installed dripless … The "box" is a cylindrical assembly, typically of bronze, comprising a sleeve threaded on one end to accept adjusting and locking nuts. Since 1991, Tides Marine has provided essential marine components to the marine industry. That would not have happened with a stuffing box. Servicing Your Stuffing Box. The traditional stuffing box gradually exhibits failure mode as more water gets in as packing wears away. The advertised lifetime of the packing is 10,000 hours so I'll never need to repack my stuffing box again. Well anyway, thats my a little of my experiences annd thoughts on the topic of dripless vs stuffing box types. (4 mm) 2 footGFO fiber dripless packing is a braided propeller and rudder shaft packing that you can install and forget about. Re: dripless stuffing box... Really- some of you guys crack me up. “Dripless” is the standard now, and there are several ways to achieve the happy status of a dry bilge. You’ll rarely need to make any adjustments, and the Gore dripless packing will last for years. It offers the convenience of a PSS "dripless" yet adds the bullet proof reliability of a traditional stuffing box. I love dripless shaft seals, but they are not without their issues and they are expensive. Recently had to replace the prop shaft on my Passport 37. 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 had the stuffing box set up on my 1991 3288 and this boat came equipped with the PSS shaft seals. Enter the dripless shaft system. The stuffing box prevents sea water from entering the boat's hull. 1993 Sea Ray 200 Overnighter OB with 1993 Mercury 150 hp Outboard 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. Important tip for dripless shaft seals! 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 … some other types might be a little more tricky. Step-by-step instructions for installing a dripless shaft seal or stuffing box. 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. What general maintenance should I be considering for a PSS Shaft Seal that is working with no apparent issues? I have also seen that port on the water pump used as an effective fresh water flush location. In many small fiberglass boats, for example, the stuffing box is mounted inboard near the point the shaft exits the hull. 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. They use heavy hose, exactly like a traditional stuffing box, and no set screws, they clamp like the collar in Maine sails photo instead. 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. To create an effective splash guard, the guard needs to completely surround the point where the shaft extends into the gland opening. also depending on original packing you may find it is totally rotten and it will fall apart while you are getting it out. You do not want to twist this hose or twist the stuffing box inside the hose. Second, the stuffing box acts to support the weight of the shaft like a bearing. In this video I show how to maintain a traditional Stuffing Box/Shaft Seal. 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. Solved the problem and also the spray/mist that occurs with excessive dripping of the stuffing 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 . Seems like to be best of both options for me. Simpler, cheaper, and more robust than a dripless system and almost as good. 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. • Dripless operation • Keeps bilge dry • Replaces stuffing box … 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. Probably a higher pressure coming off the water pump vs the aftercooler. Dripless seals vs packing-gctid624480 02-07-2015, 04:42 PM. Dripless Shaft Seal versus Stuffing Box. The common stuffing box is, to be hon-est, primitive. PBO checks out what’s available. One thing the OP may want to consider is our popular ISB-SA dripless shaft seal. 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. It is probably cheaper for Catalina to go with the traditional stuffing box then a dripless shaft seal. 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. 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. I have the PSS dripless seals and really am tiring of them. If you yearn for the proverbial dusty bilge, a dripless stuffing box is likely the only way you will achieve this goal. Stuffing box replacement: traditional or dripless. Jump to Latest Follow 21 - 40 of 74 Posts. 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. FYI there is some staining indicating your water pump might be beginning to wear, keep an eye on her. Sometimes it helps to support the shaft and propeller outside the boat. I removed the PSS dripless seal from my boat last year and reinstalled a standard packing box. I decided on just using the Teflon impregnated packing. The stuffing box is allowed to "float" on the shaft while the shaft weight is … In an inboard propeller system, these two factors conflict with one another and create undesirable effects. A lip seal is a synthetic rubber sleeve, contained in a metal housing, which fits At Tides, providing excellent customer service is our no. If your boat has inboard power, odds are it is fitted with a stuffing box to provide a watertight seal for the propeller shaft. Dripless vs Flax Stuffing Boxes: NOSOEWE: Gear & Maintenance: 15: 11-07-2009 07:31 PM: uni-fid vs traditional. Re-Packing A Traditional Stuffing Box. The stuffing box assembly attaches to the shaft log with a length of hose and a pair of hose clamps. A properly adjusted stuffing box won’t drip when the shaft is idle, but 2-3 drops/minute when the shaft is turning. WHY TIDES MARINE? 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. First of all, there is no such thing as "dripless packing" on a PSS shaft seal; in fact, there's no packing at all. CAUTION: Some stuffing boxes are rigidly attached to the hull, but most are connected to the shaft tube with a length of flexible hose. When I replaced my coupling, shaft and strut I debated between reusing my original stuffing box or an expensive dripless PSS type. Dripless or not, all three types need water for lubrication and cooling. Even with the female nut totally removed, in the water, I was getting, at best, 4 drips per minute with the nut off! GFO Packing, 1/8 in. 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. After 12 months and 200 engine hours with the GoreTex packing there is no drip. Most conventional stuffing boxes do not require the following modification, but if you cannot keep your box cool enough, you probably need it. Stuffing boxes are also used to seal rudder stocks that. 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! 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. Dripless shaft seals offer a dry bilge without the drip-per minute of the traditional stern gland. Pros and cons of dripless drive line shaft systems vs old school low drip rate stuffing boxes. In this video I show how to maintain a traditional Stuffing Box/Shaft Seal. There are 2 types of stuffing box; 1 Traditional stuffing boxes. The result is a seal that's impenetrable to water. There are a number of manufacturers of dripless shaft seals, and therefore a variety of designs exist. Several “dripless shaft seal” devices are on the market, using either lip seals or face seals. From time to time I will have 3 or 4 ounces of water under a shaft, maybe 2 or 3 times a month ?? if it is buck algonquin then this is easy to do by wrapping something around the shaft to stop the water. I have seen some dripless applications spec a max psi so double check. 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. Dripless vs Flax Stuffing Boxes: NOSOEWE: Gear & Maintenance: 15: 11-07-2009 07:31 PM: uni-fid vs traditional. It consists of a threaded sleeve and a hollow nut, through which the prop shaft passes. 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. ... replacing the aging shaft stuffing box. In some cases, water inside the stern tube is adequate, but a pressurized source of water is generally required. ease of repacking in the water could depend on what brand of stuffing box you have. The carbon is not directly threaded, the housing for it is instead allowing metal fittings to be used. 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. But as with all things in the marine industry, a change was due. 1) ... with a hump hose attaching to the hull shaft seal box …
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