PSS Rudder Seal
For 3/4" to 6" (20mm to 150mm) shaft diameters
Shop NowProduct Specifications: PSS Rudder Seal Dimensions
Downloads: Installation Instructions
The sealing system is one of the most important parts of the rudder system. However, a leaky sealing system is irritating and dangerous. The PSS Shaft Seal is a great solution as it offers ultimate reliability for rudder seals due to the simple design. Available for 3/4" to 6" (20mm to 150mm) shaft diameters. And has service parts available from stock.
Temperature Limits: 5°F to 225°F (-15°C to 107°C)
Pressure Limits: 15 PSI (1 BAR)
Shaft RPM Limits: 10,000 RPM
Carbon Graphite: Lapped to 4 HLB (0.000044" tolerance)
316SS / Nitronic 50: Faced to 9-12 Ra
Bellows Material: Molded Nitrile - PVC
How Does It Work?
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 flat surfaces of the carbon stator and the stainless steel rotor.
4
The stationary carbon stator is attached to the nitrile bellows, which is attached to the stern tube (shaft log).
Components
Rotor
The PSS stainless steel rotor is slid down the shaft and secured with set screws at 90° for maximum holding power. Computer-controlled lathes maintain precision tolerances. The faces have a 9-12 micro finish and are perpendicular to the bore to prevent run-out as the collar rotates. The stainless steel rotor will polish the face of the carbon stator during the first few minutes of operation. The stainless steel rotor used on the PSS Type A Shaft Seal is made from 316L stainless steel.
Carbon Stator
The high density, resin impregnated carbon/graphite stator is an advanced composite that is first mixed, molded, and then formed under pressure. The blanks are then baked, machined, and lapped. The face of our carbon is finished to a flatness of 4 helium light bands (measured .000044" of variation over the entire lapped surface). The grade of carbon used in the PSS has an operating temperature over 500°F (+260°C) and cannot melt if the seal runs dry, unlike a rubber lip seal or plastic face seal. In addition, the high density of the carbon greatly increases 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.
Bellows
The PSS Rudder Seal bellows are made from rubber (Nitrile) and have a temperature rating of -25°F to +225°F (-31°C to +107°C). Nitrile is known for its good resistance to weathering. Nitrile rubber's single most important property is its exceptional resistance to oils and non-polar solvents. It also offers good gas impermeability, abrasion resistance, and better thermal stability than most general-purpose elastomers.
Dimensions
Available in other shaft and tube diameters. Contact us for details.
| Part # | Shaft Dia. (A) | Rudder Post Log (B) | Overall Length (C) | Overall Compressed Length (C) | Rotor Diameter (D) | Cuff Length (E) |
|---|---|---|---|---|---|---|
| 01-034-134RP | 3/4" | 1-3/4" to 1-7/8" | 5.5" | 5" | 2.375" | 1.25" |
| 01-034-200RP | 3/4" | 2" to 2-1/8" | 5.5" | 5" | 2.375" | 1.25" |
| 01-034-214RP | 3/4" | 2-1/4" to 2-3/8" | 5.5" | 5" | 2.375" | 1.25" |
| 01-078-134RP | 7/8" | 1-3/4" to 1-7/8" | 5.5" | 5" | 2.375" | 1.25" |
| 01-078-200RP | 7/8" | 2" to 2-1/8" | 5.5" | 5" | 2.375" | 1.25" |
| 01-078-214RP | 7/8" | 2-1/4" to 2-3/8" | 5.5" | 5" | 2.375" | 1.25" |
| 01-100-134RP | 1" | 1-3/4" to 1-7/8" | 5.5" | 5" | 2.375" | 1.25" |
| 01-100-200RP | 1" | 2" to 2-1/8" | 5.5" | 5" | 2.375" | 1.25" |
| 01-100-214RP | 1" | 2-1/4" to 2-3/8" | 5.5" | 5" | 2.375" | 1.25" |
| 01-118-134RP | 1-1/8" | 1-3/4" to 1-7/8" | 5.5" | 5" | 2.375" | 1.25" |
| 01-118-200RP | 1-1/8" | 2" to 2-1/8" | 5.5" | 5" | 2.375" | 1.25" |
| 01-118-214RP | 1-1/8" | 2-1/4" to 2-3/8" | 5.5" | 5" | 2.375" | 1.25" |
| 01-114-200RP | 1-1/4" | 2" to 2-1/8" | 5.5" | 5" | 2.875" | 1.25" |
| 01-114-214RP | 1-1/4" | 2-1/4" to 2-3/8" | 5.5" | 5" | 2.875" | 1.25" |
| 01-114-212RP | 1-1/4" | 2-1/2" to 2-5/8" | 5.5" | 5" | 2.875" | 1.25" |
| 01-138-200RP | 1-3/8" | 2" to 2-1/8" | 5.5" | 5" | 2.875" | 1.25" |
| 01-138-214RP | 1-3/8" | 2-1/4" to 2-3/8" | 5.5" | 5" | 2.875" | 1.25" |
| 01-138-212RP | 1-3/8" | 2-1/2" to 2-5/8" | 5.5" | 5" | 2.875" | 1.25" |
| 01-112-200RP | 1-1/2" | 2" to 2-1/8" | 5.5" | 5" | 3.75" | 1.25" |
| 01-112-214RP | 1-1/2" | 2-1/4" to 2-3/8" | 5.5" | 5" | 3.75" | 1.25" |
| 01-112-212RP | 1-1/2" | 2-1/2" to 2-5/8" | 5.5" | 5" | 3.75" | 1.25" |
| 01-1916-200RP | 1-9/16" | 2" to 2-1/8" | 5.5" | 5" | 3.75" | 1.25" |
| 01-1916-214RP | 1-9/16" | 2-1/4" to 2-3/8" | 5.5" | 5" | 3.75" | 1.25" |
| 01-1916-212RP | 1-9/16" | 2-1/2" to 2-5/8" | 5.5" | 5" | 3.75" | 1.25" |
| 01-134-200RP | 1-3/4" | 2" to 2-1/8" | 5.5" | 5" | 3.75" | 1.25" |
| 01-134-214RP | 1-3/4" | 2-1/4" to 2-3/8" | 5.5" | 5" | 3.75" | 1.25" |
| 01-134-212RP | 1-3/4" | 2-1/2" to 2-5/8" | 5.5" | 5" | 3.75" | 1.25" |
| 01-200-214RP | 2" | 2-1/4" to 2-3/8" | 5.5" | 5" | 3.75" | 1.25" |
| 01-200-212RP | 2" | 2-1/2" to 2-5/8" | 5.5" | 5" | 3.75" | 1.25" |
| Part # | Shaft Dia. (A) | Rudder Post Log (B) | Overall Length (C) | Overall Compressed Length (C) | Rotor Diameter (D) | Cuff Length (E) |
|---|---|---|---|---|---|---|
| 01-20M-134RP | 20mm | 45mm | 140mm | 127mm | 61mm | 32mm |
| 01-20M-200RP | 20mm | 51mm | 140mm | 127mm | 61mm | 32mm |
| 01-20M-214RP | 20mm | 58mm | 140mm | 127mm | 61mm | 32mm |
| 01-22M-134RP | 22mm | 45mm | 140mm | 127mm | 61mm | 32mm |
| 01-22M-200RP | 22mm | 51mm | 140mm | 127mm | 61mm | 32mm |
| 01-22M-214RP | 22mm | 58mm | 140mm | 127mm | 61mm | 32mm |
| 01-25M-134RP | 25mm | 45mm | 140mm | 127mm | 61mm | 32mm |
| 01-25M-200RP | 25mm | 51mm | 140mm | 127mm | 61mm | 32mm |
| 01-25M-214RP | 25mm | 58mm | 140mm | 127mm | 61mm | 32mm |
| 01-28M-134RP | 28mm | 45mm | 140mm | 127mm | 61mm | 32mm |
| 01-28M-200RP | 28mm | 51mm | 140mm | 127mm | 61mm | 32mm |
| 01-28M-214RP | 28mm | 58mm | 140mm | 127mm | 61mm | 32mm |
| 01-30M-200RP | 30mm | 51mm | 140mm | 127mm | 61mm | 32mm |
| 01-30M-214RP | 30mm | 58mm | 140mm | 127mm | 61mm | 32mm |
| 01-30M-212RP | 30mm | 64mm | 140mm | 127mm | 61mm | 32mm |
| 01-32M-200RP | 32mm | 51mm | 140mm | 127mm | 74mm | 32mm |
| 01-32M-214RP | 32mm | 58mm | 140mm | 127mm | 74mm | 32mm |
| 01-32M-212RP | 32mm | 64mm | 140mm | 127mm | 74mm | 32mm |
| 01-35M-200RP | 35mm | 51mm | 140mm | 127mm | 74mm | 32mm |
| 01-35M-214RP | 35mm | 58mm | 140mm | 127mm | 74mm | 32mm |
| 01-35M-212RP | 35mm | 64mm | 140mm | 127mm | 74mm | 32mm |
| 01-38M-200RP | 38mm | 51mm | 140mm | 127mm | 96mm | 32mm |
| 01-38M-214RP | 38mm | 58mm | 140mm | 127mm | 96mm | 32mm |
| 01-38M-212RP | 38mm | 64mm | 140mm | 127mm | 96mm | 32mm |
| 01-40M-200RP | 40mm | 51mm | 140mm | 127mm | 96mm | 32mm |
| 01-40M-214RP | 40mm | 58mm | 140mm | 127mm | 96mm | 32mm |
| 01-40M-212RP | 40mm | 64mm | 140mm | 127mm | 96mm | 32mm |
| 01-45M-200RP | 45mm | 51mm | 140mm | 127mm | 96mm | 32mm |
| 01-45M-214RP | 45mm | 58mm | 140mm | 127mm | 96mm | 32mm |
| 01-45M-212RP | 45mm | 64mm | 140mm | 127mm | 96mm | 32mm |
| 01-50M-214RP | 50mm | 58mm | 140mm | 127mm | 96mm | 32mm |
| 01-50M-212RP | 50mm | 64mm | 140mm | 127mm | 96mm | 32mm |
| 01-55M-214RP | 50mm | 58mm | 140mm | 127mm | 96mm | 32mm |
| 01-55M-212RP | 50mm | 64mm | 140mm | 127mm | 96mm | 32mm |