PSS SHAFT SEAL P.S.S. (Packless Sealing System) Shaft Seals

P.S.S. Shaft Seals have logged up to 40,000 hours of hassle-free operation!

High-density carbon and high-density stainless steel components create a dripless mechanical seal that provides years of use. The stationary carbon flange attaches to the stern tube with a nitrile bellows and is held in contact with the stainless-steel flange that rotates along with the propeller shaft. The force of the compressed bellows presses the flanges together, which creates a   100% watertight seal that is virtually maintenance free. This system is self-adjusting and it eliminates the need for periodic adjustment required by a conventional stuffing box.

The seal can be used with a pitted or slightly misaligned shaft because it’s designed to compensate for small flaws. Additionally, it won’t melt or have a catastrophic failure.

P.S.S. makes its seals with space-age carbon composites, heavy-duty nitrile O-rings and bellows and 316 stainless steel rotor and fasteners. The durable seals are designed and manufactured to resist extreme temperatures, saltwater, UV radiation, petroleum-based products and corrosion. Typical break-in after proper installation is one hour. Propeller shaft and stern tube diameter are necessary when ordering. Sizes not listed are available by special order.  

Key Features:

• High-density carbon flange
• High-density stainless-steel flange
• Nitrile bellows and O-rings
• 316 stainless-steel rotor and fasteners
• Three-year limited warranty

How to order the seal you need

• Select your system according to the shaft diameter, stern tube diameter and the required amout of bellows compression. For help, see the P.S.S. Shaft Seal Installation Manual. We offer a range of P.S.S. Shaft Seals to cover most applications, but if you do not see what you are looking for here, others are available by Special Order
• You can also call 1-800-BOATING for help with selection.

Our selection of P.S.S. Shaft Seals includes the following:

Shaft Diameter	Stern Tube Diameter	Compressed Length	Model	P.Y.I. Number
30mm	2″	6 1/4″	5336730	02-30M-200
3/4″	1 1/2″	6 1/4″	5335971	02-034-112
7/8″	1 1/2″	6 1/4″	5336037	02-078-112
7/8″	1 3/4″	6 1/4″	5336524	02-078-134
1″	1 1/2″	6 1/4″	1918614	02-100-112
1″	1 3/4″	6 1/4	1918655	02-100-134
1″	2″	6 1/4″	5336599	02-100-200
1 1/8″	1 3/4″	6 1/4″	5336649	02-118-134
1 1/4″	1 3/4″	6 1/2″	5336656	02-114-134
1 1/4″	2″	6 1/2″	223990	02-114-200
1 1/4″	2 1/4″	6 1/2″	224008	02-114-214
1 1/4	2 1/2″	6 1/2″	1271691	02-114-212
1 1/4″	2 3/4″	8 7/8″	2496602	02-114-234
1 3/8″	2 1/4″	6 1/2″	1271642	02-138-214
1 3/8″	2 1/2″	6 1/2″	1271659	02-138-212
1 1/2	3	8 1/2″	1271865	02-112-300
1 1/2″	2 1/2″	8 1/8″	224016	02-112-212
1 1/2″	3 1/2″	3 3/4″	10261410	02-112-312
1 3/4″	3″	8 1/8″	224024	02-134-300
1 3/4″	3 1/2″	8 1/8″	1918747	02-134-312
2″	3 1/2″	8 1/8″	1918762	02-200-312
2″	3″	8 1/8″	224040	02-200-300
2 1/4″	3 1/2″	8 1/2″	5336672	02-214-312
2 1/2″	3 1/2″	8 1/2″	5336706	02-212-312
2 1/2″	4″	8 1/2″	1271634	02-212-400
3″	4 1/2″	10 1/8″	5336714	02-112-312