PSS Shaft Seal 1-3/4" Shaft 3" Tube 02-134-300, Color: Black, w/ Free Shipping

PSS Shaft Seal 1-3/4" Shaft 3" Tube

Shaft Diameter: 1-3/4"

Stern Tube Diameter (D): 3"

Total Length (A): 9.175"

Total Length (compressed) (Compressed A): 8.175"

Rotor Diameter (B): 3.75"

Carbon Cuff Diameter (C): 3.25"

Stern Cuff Length (E): 2"

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. The PSS Shaft Seal is also recognized as

the premiere retrofit (aftermarket) seal on the world market. Certified by

Bureau Veritas ABS & Rina: Boat builders / yards recognize the advantages

and value of installing the PSS as it eliminates the maintenance constant

adjustment & cost associated with traditional packing type glands. Aside

from these benefits the PSS Shaft Seal helps to eliminate water in the

bilge (100% water tight) & wear to the propeller shaft. The PSS Shaft Seal

can be easily retrofitted and is available for shafts ranging from 3/4"

(20mm) to 6" (150mm).

The PSS Shaft Seal is a mechanical face seal that is created between

the flat surfaces of the rotating stainless steel rotor and the stationary

carbon flange. The stationary carbon flange is attached to the vessels stern tube with hose clamps and the carbon flange is attached to the front side of the bellows with hose clamps. The stainless steel rotor is fit on the shaft

in front of the carbon flange. The stainless steel rotor is used to compress the bellows before the collar is secured to the shaft with set-screws. This

compression (pre-load) maintains contact between the faces and allows the

PSS to compensate for the thrust from the propeller. The carbon flange is

bored larger than the shaft diameter allowing it to "float" around the shaft and thus compensate for most misalignment and vibration problems. The

stainless steel collar is sealed to the shaft by two o-rings that are

recessed into the bore of the collar. These o-rings rotate with the shaft

and stainless steel rotor and do not experience wear during operation.

As with any rubber hose below waterline the PSS bellows must be inspected on a regular basis for any sign of wear aging or chemical deterioration.

PYI suggests as preventative maintenance that the PSS bellow be replaced in

six year intervals. During bellows replacement it is recommended the o-rings & set screws in the stainless steel rotor also be replaced."

Bellows may need to be more frequently inspected in an environment where

non-sealed batteries emit sulfuric acid. Sulfuric acid vapor will accelerate rubber deterioration as will an ozonater.

The Maintenance Kit includes the items you need to properly maintain your

PSS Shaft Seal. Included in the kit is one (1) PSS bellow two (2) O-rings

five (5) set screws four (4) new hose clamps and an allen key.

Specifications for PSS Shaft Seal 1-3/4" Shaft 3" Tube:

Package Contents:

• PSS Shaft Seal 1-3/4" Shaft 3" Tube