PSS PRO Shaft Seal

PSS PRO Shaft Seal

For 1-1/4" to 3-3/4" (32mm to 95mm) shaft diameters

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Product Specifications: PSS PRO Shaft Seal Dimensions

Downloads: Installation Instructions

The PSS PRO Shaft Seal is a mechanical face seal utilizing our proven stainless steel and carbon sealing components, but adds a reinforced silicone bellow, a secondary shaft retention collar, 316 Stainless Steel hose clamps (rolled edges & non-perforated) and an optional Nitronic 50 rotor upgrade (for highly corrosive environments). Designed specifically for applications that will require increased durability and resistance to harsh, corrosive, high pressure and otherwise demanding environments. The PSS PRO Shaft Seal is a specialized mechanical seal that is suitable for a variety of applications, with unmatched performance.

As with PSS Type A & B Seals, The PRO Shaft Seal is a mechanical face seal. The sealing surface is created between the flat surfaces of the rotating stainless-steel rotor and the stationary carbon flange. The stationary carbon flange is attached to a heavy duty silicone bellow which is attached to the vessel’s stern tube (shaft log), with 316SS hose clamps. The stainless-steel rotor is fitted on the shaft in front of the carbon flange and is used to compress the bellow , the rotor is then secured to the shaft with set-screws and the shaft retention collar is installed. This compression (pre-load) maintains constant contact between the two mating faces of the stainless-steel rotor and carbon flange, allowing the PSS to compensate for the variable axial movement due to propeller thrust. The carbon flange is over-bored to the shaft diameter allowing it to "float" around the shaft and thus compensate for most misalignment and vibration from the drive-line. The stainless-steel rotor is sealed to the shaft by two O-rings that are recessed into the bore of the rotor. These O-rings rotate with the shaft and the stainless-steel rotor, and therefore do not experience wear during operation.

Temperature Limits: -13°F to 425°F (-25°C to 220°C)
Pressure Limits: 40 PSI (2.75 BAR)
Shaft RPM Limits: 10,000 RPM
Carbon Graphite: Lapped to 4 HLB (0.000044" tolerance)
316SS / Nitronic 50: Faced to 9 Ra
Bellow Material: Molded formed silicone / fabric


How Does It Work?

How a PSS PRO Shaft Seal Works

1

Two nitrile o-rings seal the stainless steel rotor to the shaft and will not experience wear.

2

A primary set screw and a backup set screw (2 sets) are used to secure the stainless steel rotor to the shaft.

3

A seal is created between the two mating faces of the carbon stator and the stainless steel rotor.

4

Raw water is fed to the PSS Shaft Seal for cooling / lubricating the seal faces on high speed vessels.

5

The stationary carbon stator is attached to the bellow, which is secured to the stern tube (shaft log).

6

The Shaft Retention Collar is attached to the shaft and helps retain the propeller or rudder shaft in your vessel in the event of catastrophic failure of the coupling or if the shaft comes free from the coupling.

7

Stainless steel rings are fit to the bellow for increased strength, support and durability. External rings come standard on sizes 2-1/4" (60mm) to 3-3/4" (95mm) and optional for smaller sizes.

8

316SS hose clamps with rolled edges and non-perforated band.

9

Hose clamp tail protection, Clamp Jackets.

Components

Shaft Retention Collar

The PYI Shaft Retention Collar is designed to help retain the propeller or rudder shaft in your vessel in the event of catastrophic failure of the coupling or if the shaft comes free from the coupling. The double split design provides the maximum in axial holding power with the benefit of quick and efficient assembly with the shaft installed. Design fully engages the shaft without marring. Easily installed where major disassembly would otherwise be required. Greater axial holding power than set screw or one-piece clamping collars. Effective on hard and soft shafts.

Shaft Retention Collar

PSS PRO Shaft Seal rotor

Rotor

The rotor on the PRO seal is manufactured out of 316L stainless steel and machined to a 9Ra finish on precision CNC lathes. It is secured on the shaft using 2 pairs of set screws positioned at 90 degrees angle in addition, a locking collar is placed in front of the rotor and further retains the propeller or rudder shaft in case of catastrophic failure of the coupling or if the shaft comes free from the coupling. As on the Type A seal the carbon stator further polishes the rotor during the initial hours of operations. This rotor does not need replacement under normal operating conditions.


Carbon Stator

The high density, resin impregnated carbon stator is manufactured from a space age composite which is first mixed and molded, then formed under pressure. The blank parts are then baked, machined and lapped to a measured flatness of 4 helium light bands (measured at 0.000044" of variation over its entire lapped surface). The grade of carbon composite used in the PSS Shaft Seal has a maximum operating temperature of 500°F (+260°C) and cannot melt if the seal runs dry for a short period of time unlike a lip seal or a plastic face seal. The high density of the carbon greatly increases the longevity and wear resistance. Several commercial vessels have recorded over 40,000 (over 4-1/2 years of continuous operation) engine hours on the same, original components. The carbon should not need to be replaced under normal operating conditions.

PSS PRO Shaft Seal carbon stator

PSS PRO Bellow

Bellow

The bellow on both the PRO and Type B PSS seal is constructed out of high temp silicone laminated with either 4 or 5 plies of polyester fabric (aramid in larger sizes) and covered with a layer of fluorosilicone. In addition both ends of the bellow are sealed so no water can get in the polyester/Aramid fabric. The 4 or 5 fabric inlay provides excellent strength to abrasion and resistance to pressure without loading the silicone. On the larger models, the strength is greatly increased by the use of stainless steel hoops laid into the convolutions of the bellow.


Hose Barb

For high speed vessels (planning hulls or vessels powering over 12 knots) it is required that a positive water supply be plumbed to the PSS Shaft Seal for the purpose of lubricating and cooling the seal faces. There are many sources of water supply, review the PSS Shaft Seal Installation Instructions for more information and note all plumbing must follow the standards and practices of proper boat plumbing. In most cases a slow speed boat that does not have a bearing in the shaft log does not require positive water feed and can simply be "vented". Ideally the vent line will be run at least 2-3 feet above the water line and as close to the center line as possible to ensure the vent hose is never below the water line, even if the boat heels. Review the PSS Shaft Seal Installation Instructions for more details on venting the seal.

PSS PRO hose barb

PSS PRO Bellow Rings

Bellow Rings

Stainless steel rings are fit to the bellow for increased strength, support and durability. External rings come standard on sizes 2-1/4" (60mm) to 3-3/4" (95mm) and optional for smaller sizes.


Dimensions

PSS PRO Seal dimensions
Part # Shaft Dia. (A) Stern Tube Dia. (B) Uncompressed Length (C) Approx. Compressed Length Rotor Diameter (D) Stern Cuff Length (E)
03-114-134 1-1/4" 1-3/4" to 1-7/8" 8.930" 8.180" 2.875" 1.3"
03-114-200 1-1/4" 2" to 2-1/8" 8.805" 8.055" 2.875" 1.3"
03-114-214 1-1/4" 2-1/4" to 2-3/8" 8.930" 8.180" 2.875" 1.3"
03-114-212 1-1/4" 2-1/2" to 2-5/8" 8.805" 8.055" 2.875" 1.3"
03-114-234 1-1/4" 2-3/4" to 2-7/8" 10.305" 9.555" 2.875" 1.3"
03-114-300 1-1/4" 3" to 3-1/8" 10.305" 9.555" 2.875" 1.3"
03-114-314 1-1/4" 3-1/4" to 3-3/8" 10.493" 9.743" 2.875" 1.3"
03-114-312 1-1/4" 3-1/2" to 3-5/8" 10.305" 9.555" 2.875" 1.3"
03-138-134 1-3/8" 1-3/4" to 1-7/8" 8.430" 7.680" 2.875" 1.3"
03-138-200 1-3/8" 2" to 2-1/8" 8.868" 8.118" 2.875" 1.5"
03-138-214 1-3/8" 2-1/4" to 2-3/8" 8.993" 8.243" 2.875" 1.3"
03-138-212 1-3/8" 2-1/2" to 2-5/8" 8.868" 8.118" 2.875" 1.3"
03-138-234 1-3/8" 2-3/4" to 2-7/8" 10.368" 9.618" 2.875" 1.3"
03-138-300 1-3/8" 3" to 3-1/8" 10.368" 9.618" 2.875" 1.3"
03-138-312 1-3/8" 3-1/2" to 3-5/8" 10.368" 9.618" 2.875" 1.3"
03-112-200 1-1/2" 2" to 2-1/8" 8.968" 7.968" 3.75" 1.3"
03-112-214 1-1/2" 2-1/4" to 2-3/8" 8.968" 7.968" 3.75" 1.3"
03-112-212 1-1/2" 2-1/2" to 2-5/8" 8.843" 7.843" 3.75" 1.3"
03-112-234 1-1/2" 2-3/4" to 2-7/8" 9.331" 8.331" 3.75" 1.3"
03-112-300 1-1/2" 3" to 3-1/8" 9.143" 8.143" 3.75" 1.3"
03-112-314 1-1/2" 3-1/4" to 3-3/8" 9.331" 8.331" 3.75" 1.3"
03-112-312 1-1/2" 3-1/2" to 3-5/8" 9.143" 8.143" 3.75" 1.3"
03-112-334 1-1/2" 3-3/4" to 3-7/8" 9.268" 8.268" 3.75" 1.3"
03-112-400 1-1/2" 4" to 4-1/8" 9.268" 8.268" 3.75" 1.3"
03-1916-212 1-9/16" 2" to 2-1/1" 8.843" 7.843" 3.75" 1.3"
03-1916-300 1-9/16" 2" to 2-1/1" 9.143" 8.143" 3.75" 1.3"
03-134-214 1-3/4" 2-1/4" to 2-3/8" 9.093" 8.093" 3.75" 1.3"
03-134-212 1-3/4" 2-1/2" to 2-5/8" 8.968" 7.968" 3.75" 1.3"
03-134-234 1-3/4" 2-3/4" to 2-7/8" 9.456" 8.456" 3.75" 1.3"
03-134-300 1-3/4" 3" to 3-1/8" 9.268" 8.268" 3.75" 1.3"
03-134-314 1-3/4" 3-1/4" to 3-3/8" 9.456" 8.456" 3.75" 1.3"
03-134-312 1-3/4" 3-1/2" to 3-5/8" 9.268" 8.268" 3.75" 1.3"
03-134-334 1-3/4" 3-3/4" to 3-7/8" 9.393" 8.393" 3.75" 1.3"
03-134-400 1-3/4" 4" to 4-1/8" 9.393" 8.393" 3.75" 1.3"
03-200-212 2" 2-1/2" to 2-5/8" 8.968" 7.968" 3.75" 1.3"
03-200-234 2" 2-3/4" to 2-7/8" 9.456" 8.456" 3.75" 1.3"
03-200-300 2" 3" to 3-1/8" 9.268" 8.268" 3.75" 1.3"
03-200-314 2" 3-1/4" to 3-3/8" 9.456" 8.456" 3.75" 1.3"
03-200-312 2" 3-1/2" to 3-5/8" 9.268" 8.268" 3.75" 1.3"
03-200-334 2" 3-3/4" to 3-7/8" 9.393" 8.393" 3.75" 1.3"
03-200-400 2" 4" to 4-1/8" 9.393" 8.393" 3.75" 1.3"
03-214-314 2-1/4" 3-1/4" to 3-3/8" 9.863" 8.863" 4.2" 1.3"
03-214-312 2-1/4" 3-1/2" to 3-5/8" 9.675" 8.675" 4.2" 1.3"
03-214-334 2-1/4" 3-3/4" to 3-7/8" 9.675" 8.675" 4.2" 1.3"
03-214-400 2-1/4" 4" to 4-1/8" 9.675" 8.675" 4.2" 1.3"
03-214-414 2-1/4" 4-1/4" to 4-3/8" 9.800" 8.800" 4.2" 1.3"
03-214-412 2-1/4" 4-1/2" to 4-5/8" 9.800" 8.800" 4.2" 1.3"
03-214-434 2-1/4" 4-3/4" to 4-7/8" 10.670" 9.670" 4.2" 1.3"
03-214-500 2-1/4" 5" to 5-1/8" 10.670" 9.670 4.2" 1.3"
03-212-314 2-1/2" 3-1/4" to 3-3/8" 9.800" 8.800" 4.2" 1.3"
03-212-312 2-1/2" 3-1/2" to 3-5/8" 9.800" 8.800" 4.2" 1.3"
03-212-334 2-1/2" 3-3/4" to 3-7/8" 9.800" 8.800" 4.2" 1.3"
03-212-400 2-1/2" 4" to 4-1/8" 9.800" 8.800" 4.2" 1.3"
03-212-414 2-1/2" 4-1/4" to 4-3/8" 9.925" 8.925" 4.2" 1.3"
03-212-412 2-1/2" 4-1/2" to 4-5/8" 9.925" 8.925" 4.2" 1.3"
03-212-434 2-1/2" 4-3/4" to 4-7/8" 10.795" 9.795" 4.2" 1.3"
03-212-500 2-1/2" 5" to 5-1/8" 10.795" 9.795" 4.2" 1.3"
03-234-400 2-3/4" 4" to 4-1/8" 9.988" 8.988" 5" 1.3"
03-234-414 2-3/4" 4-1/4" to 4-3/8" 9.988" 8.988" 5" 1.3"
03-234-412 2-3/4" 4-1/2" to 4-5/8" 9.800" 8.800" 5" 1.3"
03-234-434 2-3/4" 4-3/4" to 4-7/8" 10.858" 9.858" 5" 2.5"
03-234-500 2-3/4" 5" to 5-1/8" 10.670" 9.670" 5" 2.5"
03-234-514 2-3/4" 5-1/4" to 5-3/8" 9.925" 8.925" 5" 1.3"
03-234-512 2-3/4" 5-1/2" to 5-5/8" 10.795" 9.795" 5" 2.5"
03-300-400 3" 4" to 4-1/8" 9.988" 8.988" 5" 1.3"
03-300-414 3" 4-1/4" to 4-3/8" 9.988" 8.988" 5" 1.3"
03-300-412 3" 4-1/2" to 4-5/8" 9.800" 8.800" 5" 1.3"
03-300-434 3" 4-3/4" to 4-7/8" 10.858" 9.858" 5" 2.5"
03-300-500 3" 5" to 5-1/8" 10.670" 9.670" 5" 2.5"
03-300-514 3" 5-1/4" to 5-3/8" 9.925" 8.925" 5.25" 1.3"
03-300-512 3" 5-1/2" to 5-5/8" 10.983" 9.983" 5" 2.5"
03-300-534 3" 5-3/4" to 5-7/8" 10.795" 9.795" 5" 2.5"
03-300-600 3" 6" to 6-1/8" 10.795" 9.795" 5" 2.5"
03-314-412 3-1/4" 4-1/2" to 4-5/8" 10.538" 9.538" 6" 1.3"
03-314-434 3-1/4" 4-3/4" to 4-7/8" 10.538" 9.538" 6" 1.3"
03-314-500 3-1/4" 5" to 5-1/8" 10.538" 9.538" 6" 1.3"
03-314-514 3-1/4" 5-1/4" to 5-3/8" 10.350" 9.350" 6" 1.3"
03-314-512 3-1/4" 5-1/2" to 5-5/8" 11.408" 10.408" 6" 2.5"
03-314-534 3-1/4" 5-3/4" to 5-7/8" 11.408" 10.408" 6" 2.5"
03-314-600 3-1/4" 6" to 6-1/8" 11.220" 10.220" 6" 2.5"
03-312-412 3-1/2" 4-1/2" to 4-5/8" 10.538" 9.538" 6" 1.3"
03-312-434 3-1/2" 4-3/4" to 4-7/8" 10.538" 9.538" 6" 1.3"
03-312-500 3-1/2" 5" to 5-1/8" 10.538" 9.538" 6" 1.3"
03-312-514 3-1/2" 5-1/4" to 5-3/8" 10.350" 9.350" 6" 1.3"
03-312-512 3-1/2" 5-1/2" to 5-5/8" 11.408" 10.408" 6" 2.5"
03-312-534 3-1/2" 5-3/4" to 5-7/8" 11.408" 10.408" 6" 2.5"
03-312-600 3-1/2" 6" to 6-1/8" 11.220" 10.220" 6" 2.5"
03-312-612 3-1/2" 6-1/2" to 6-5/8" 12.300" 11.300" 6" 1.3"
03-358-600 3-5/8" 6" to 6-1/8" 11.220" 10.220" 6" 2.5"
03-358-612 3-5/8" 6-1/2" to 6-5/8" 12.300" 11.300" 6" 1.3"
03-334-412 3-3/4" 4-1/2" to 4-5/8" 10.538" 9.538" 6" 1.3"
03-334-434 3-3/4" 4-3/4" to 4-7/8" 10.538" 9.538" 6" 1.3"
03-334-500 3-3/4" 5" to 5-1/8" 10.538" 9.538" 6" 1.3"
03-334-514 3-3/4" 5-1/4" to 5-3/8" 10.350" 9.350" 6" 1.3"
03-334-512 3-3/4" 5-1/2" to 5-5/8" 11.408" 10.408" 6" 2.5"
03-334-534 3-3/4" 5-3/4" to 5-7/8" 11.408" 10.408" 6" 2.5"
03-334-600 3-3/4" 6" to 6-1/8" 11.220" 10.220" 6" 2.5"
Part # Shaft Dia. (A) Stern Tube Dia. (B) Approx. Length (C) Approx. Compressed Length Rotor Diameter (D) Stern Cuff Length (E)
03-32M-134 32mm 1-3/4" to 1-7/8" 8.930" 8.180" 2.875" 1.3"
03-32M-200 32mm 2" to 2-1/8" 8.805" 8.055" 2.875" 1.3"
03-32M-214 32mm 2-1/4" to 2-3/8" 8.930" 8.180" 2.875" 1.3"
03-32M-212 32mm 2-1/2" to 2-5/8" 8.805" 8.055" 2.875" 1.3"
03-32M-234 32mm 2-3/4" to 2-7/8" 10.305" 9.555" 2.875" 1.3"
03-32M-300 32mm 3" to 3-1/8" 10.305" 9.555" 2.875" 1.3"
03-35M-134 35mm 1-3/4" to 1-7/8" 8.993" 8.243" 2.875" 1.3"
03-35M-200 35mm 2" to 2-1/8" 8.868" 8.118" 2.875" 1.3"
03-35M-214 35mm 2-1/4" to 2-3/8" 8.993" 8.243" 2.875" 1.3"
03-35M-212 35mm 2-1/2" to 2-5/8" 8.868" 8.118" 2.875" 1.3"
03-35M-234 35mm 2-3/4" to 2-7/8" 10.368" 9.618" 2.875" 1.3"
03-35M-300 35mm 3" to 3-1/8" 10.368" 9.618" 2.875" 1.3"
03-38M-200 38mm 2" to 2-1/8" 8.968" 7.968" 3.75" 1.3"
03-38M-214 38mm 2-1/4" to 2-1/8" 8.968" 7.968" 3.75" 1.3"
03-38M-212 38mm 2-1/2" to 2-5/8" 8.843" 7.843" 3.75" 1.3"
03-38M-234 38mm 2-3/4" to 2-7/8" 9.331" 8.331" 3.75" 1.3"
03-38M-300 38mm 3" to 3-1/8" 9.143" 8.143" 3.75" 1.3"
03-38M-314 38mm 3-1/4" to 3-3/8" 9.331" 8.331" 3.75" 1.3"
03-38M-312 38mm 3-1/2" to 3-5/8" 9.143" 8.143" 3.75" 1.3"
03-38M-334 38mm 3-3/4" to 3-7/8" 9.268" 8.268" 3.75" 1.3"
03-38M-400 38mm 4" to 4-1/8" 9.268" 8.268" 3.75" 1.3"
03-40M-200 40mm 2" to 2-1/8" 8.968" 7.968" 3.75" 1.3"
03-40M-214 40mm 2-1/4" to 2-3/8" 8.968" 7.968" 3.75" 1.3"
03-40M-212 40mm 2-1/2" to 2-5/8" 8.843" 7.843" 3.75" 1.3"
03-40M-234 40mm 2-3/4" to 2-7/8" 9.331" 8.331" 3.75" 1.3"
03-40M-300 40mm 3" to 3-1/8" 9.143" 8.143" 3.75" 1.3"
03-40M-314 40mm 3-1/4" to 3-3/8" 9.331" 8.331" 3.75" 1.3"
03-40M-312 40mm 3-1/2" to 3-5/8" 9.143" 8.143" 3.75" 1.3"
03-40M-334 40mm 3-3/4" to 3-7/8" 9.268" 8.268" 3.75" 1.3"
03-40M-400 40mm 4" to 4-1/8" 9.268" 8.268" 3.75" 1.3"
03-45M-214 45mm 2-1/4" to 2-3/8" 9.093" 8.093" 3.75" 1.3"
03-45M-212 45mm 2-1/2" to 2-5/8" 8.968" 7.968" 3.75" 1.3"
03-45M-234 45mm 2-3/4" to 2-7/8" 9.456" 8.456" 3.75" 1.3"
03-45M-300 45mm 3" to 3-1/8" 9.268" 8.268" 3.75" 1.3"
03-45M-314 45mm 3-1/4" to 3-3/8" 9.456" 8.456" 3.75" 1.3"
03-45M-312 45mm 3-1/2" to 3-5/8" 9.268" 8.268" 3.75" 1.3"
03-45M-334 45mm 3-3/4" to 3-7/8" 9.393" 8.393" 3.75" 1.3"
03-45M-400 45mm 4" to 4-1/8" 9.393" 8.393" 3.75" 1.3"
03-50M-212 50mm 4" to 4-1/8" 8.968" 7.968" 3.75" 1.3"
03-50M-234 50mm 2-3/4" to 2-7/8" 9.456" 8.456" 3.75" 1.3"
03-50M-300 50mm 3" to 3-1/8" 9.268" 8.268" 3.75" 1.3"
03-50M-314 50mm 3-1/4" to 3-3/8" 9.456" 8.456" 3.75" 1.3"
03-50M-312 50mm 3-1/2" to 3-5/8" 9.268" 8.268" 3.75" 1.3"
03-50M-334 50mm 3-3/4" to 3-7/8" 9.393" 8.393" 3.75" 1.3"
03-50M-400 50mm 4" to 4-1/8" 9.393" 8.393" 3.75" 1.3"
03-55M-212 55mm 2-1/2" to 2-5/8" 8.968" 7.968" 3.75" 1.3"
03-55M-234 55mm 2-3/4" to 2-7/8" 9.456" 8.456" 3.75" 1.3"
03-55M-300 55mm 3" to 3-1/8" 9.268" 8.268" 3.75" 1.3"
03-55M-314 55mm 3-1/4" to 3-3/8" 9.456" 8.456" 3.75" 1.3"
03-55M-312 55mm 3-1/2" to 3-5/8" 9.268" 8.268" 3.75" 1.3"
03-55M-334 55mm 3-3/4" to 3-7/8" 9.393" 8.393" 3.75" 1.3"
03-55M-400 55mm 4" to 3-1/8" 9.393" 8.393" 3.75" 1.3"
03-60M-314 60mm 3-1/4" to 3-3/8" 9.675" 8.675" 4.2" 1.3"
03-60M-312 60mm 3-1/2" to 3-5/8" 9.675" 8.675" 4.2" 1.3"
03-60M-334 60mm 3-3/4" to 3-7/8" 9.675" 8.675" 4.2" 1.3"
03-60M-400 60mm 4" to 4-1/8" 9.675" 8.675" 4.2" 1.3"
03-60M-414 60mm 4-1/4" to 4-3/8" 9.800" 8.800" 4.2" 1.3"
03-60M-412 60mm 4-1/2" to 4-5/8" 9.800" 8.800" 4.2" 1.3"
03-60M-434 60mm 4-3/4" to 4-7/8" 10.670" 9.670" 4.2" 1.3"
03-60M-500 60mm 5" to 5-1/8" 10.670" 9.670" 4.2" 1.3"
03-65M-314 65mm 3-1/4" to 3-3/8" 9.800" 8.800" 4.2" 1.3"
03-65M-312 65mm 3-1/2" to 3-5/8" 9.800" 8.800" 4.2" 1.3"
03-65M-334 65mm 3-3/4" to 3-7/8" 9.800" 8.800" 4.2" 1.3"
03-65M-400 65mm 4" to 4-1/8" 9.800" 8.800" 4.2" 1.3"
03-65M-414 65mm 4-1/4" to 4-3/8" 9.925" 8.925" 4.2" 1.3"
03-65M-412 65mm 4-1/2" to 4-5/8" 9.925" 8.925" 4.2" 1.3"
03-65M-434 65mm 4-3/4" to 4-7/8" 10.795" 9.795" 4.2" 1.3"
03-65M-500 65mm 5" to 5-1/8" 10.795" 9.795" 4.2" 1.3"
03-70M-400 70mm 4" to 4-1/8" 9.988" 8.988" 5" 1.3"
03-70M-414 70mm 4-1/4" to 4-3/8" 9.988" 8.988" 5" 1.3"
03-70M-412 70mm 4-1/2" to 4-5/8" 9.800" 8.800" 5" 1.3"
03-70M-434 70mm 4-3/4" to 4-7/8" 10.860" 9.860" 5" 2.5"
03-70M-500 70mm 5" to 5-1/8" 10.670" 9.670" 5" 2.5"
03-70M-514 70mm 5-1/4" to 5-3/8" 9.925" 8.925" 5" 1.3"
03-70M-512 70mm 5-1/2" to 5-5/8" 10.795" 9.795" 5" 2.5"
03-70M-534 70mm 5-3/4" to 5-7/8" 10.795" 9.795" 5" 2.5"
03-70M-600 70mm 6" to 7-1/8" 10.795" 9.795" 5" 2.5"
03-75M-400 75mm 4" to 4-1/8" 9.988" 8.988" 5" 1.3"
03-75M-414 75mm 4-1/4" to 4-3/8" 9.988" 8.988" 5" 1.3"
03-75M-412 75mm 4-1/2" to 4-5/8" 9.800" 8.800" 5" 1.3"
03-75M-434 75mm 4-3/4" to 4-7/8" 10.858" 9.858" 5" 2.5"
03-75M-500 75mm 5" to 5-1/8" 10.670" 9.670" 5" 2.5"
03-75M-514 75mm 5-1/4" to 5-3/8" 9.925" 8.925" 5" 1.3"
03-75M-512 75mm 5-1/2" to 5-5/8" 10.983" 9.983" 5" 2.5"
03-75M-534 75mm 5-3/4" to 5-7/8" 10.795" 9.795" 5" 2.5"
03-75M-600 80mm 6" to 6-1/8" 10.795" 9.795" 5" 2.5"
03-80M-400 80mm 4" to 4-1/8" 9.988" 8.988" 5" 1.3"
03-80M-414 80mm 4-1/4" to 4-3/8" 9.988" 8.988" 5" 1.3"
03-80M-412 80mm 4-1/2" to 4-5/8" 9.800" 8.800" 5" 1.3"
03-80M-434 80mm 4-3/4" to 4-7/8" 10.858" 9.858" 5" 2.5"
03-80M-500 80mm 5" to 5-1/8" 10.670" 9.670" 5" 2.5"
03-80M-514 80mm 5-1/4" to 5-3/8" 9.925" 8.925" 5" 1.3"
03-80M-512 80mm 5-1/2" to 5-5/8" 10.983" 9.983" 5" 2.5"
03-80M-534 80mm 5-3/4" to 5-7/8" 10.795" 10.795" 5" 2.5"
03-80M-600 80mm 6" to 6-1/8" 10.795" 9.795" 5" 2.5"
03-85M-412 85mm 4-1/2" to 4-5/8" 10.538" 9.538" 6" 1.3"
03-85M-434 85mm 4-3/4" to 4-7/8" 10.538" 9.538" 6" 1.3"
03-85M-500 85mm 5" to 5-1/8" 10.538" 9.538" 6" 1.3"
03-85M-514 85mm 5-1/4" to 5-3/8" 10.350" 9.350" 6" 1.3"
03-85M-512 85mm 5-1/2" to 5-5/8" 11.408" 10.408" 6" 2.5"
03-85M-534 85mm 5-3/4" to 5-7/8" 11.408" 10.408" 6" 2.5"
03-85M-600 85mm 6" to 6-1/8" 11.220" 10.220" 6" 2.5"
03-90M-412 90mm 4-1/2" to 4-5/8" 10.538" 9.538" 6" 1.3"
03-90M-434 90mm 4-3/4" to 4-7/8" 10.538" 9.538" 6" 1.3"
03-90M-500 90mm 5" to 5-1/8" 10.538" 9.538" 6" 1.3"
03-90M-514 90mm 5-1/4" to 5-3/8" 10.350" 9.350" 6" 1.3"
03-90M-512 90mm 5-1/2" to 5-5/8" 11.408" 10.408" 6" 2.5"
03-90M-534 90mm 5-3/4" to 5-7/8" 11.408" 10.408" 6" 2.5"
03-90M-600 90mm 6" to 6-1/8" 11.220" 10.220" 6" 2.5"
03-95M-412 95mm 4-1/2" to 4-5/8" 10.538" 9.538" 6" 1.3"
03-95M-434 95mm 4-3/4" to 4-7/8" 10.538" 9.538" 6" 1.3"
03-95M-500 95mm 5-1/8" to 5-1/8" 10.538" 9.538" 6" 1.3"
03-95M-514 95mm 5-1/4" to 5-3/8" 10.350" 9.350" 6" 1.3"
03-95M-512 95mm 5-1/2" to 5-5/8" 11.408" 10.408" 6" 2.5"
03-95M-534 95mm 5-3/4" to 5-7/8" 11.408" 10.408" 6" 2.5"
03-95M-600 95mm 6" to 6-1/8" 11.220" 10.220" 6" 2.5"

Tips

Here are some helpful tips to make sure you get the most out of your PSS Shaft Seal.
For more helpful tips please visit our FAQ page.

PSS PRO Maintenance Kit

To ensure longevity and proper function of the PSS PRO Shaft Seal, PYI provides a PSS PRO Maintenance Kit to follow the PYI's recommended maintenance schedule. As with any rubber / silicone hose below waterline, the PSS bellow must be inspected on a regular basis for any sign of wear, aging or chemical deterioration. PYI recommends that the bellow be replaced once every 8 to 10 years. During the bellow replacement it is also recommended that the o-rings & set screws in the stainless steel rotor are replaced, as well as the hose clamps. PYI includes all of the necessary replacement parts in the PSS Maintenance Kit.

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PSS PRO Maintenance Kit
New and used set screws

Set Screws

Please be sure to never use the same set screw on the shaft twice. There are two set screws in each of the two holes in the stainless steel rotor. One is tightened onto the shaft and the other is tightened onto the first to lock it in place against the shaft. The set screws are made with a cup at the base that compresses into the shaft ensuring a secure grip. When re-installing the rotor please use new set screws. In the case that you do not have spare set screws, the set screws in the rotor need to be reversed so there is an unused cup being compressed onto the shaft.

If you need to new set screws you can purchase a PSS O-Ring Kit. This comes with 2 new o-rings, 5 set screws, an allen wrench, Clamp Jackets and Thread Lock.

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