PSS Maintenance Kits - For 20mm to 60mm Shafts

Part Number: 07-20M-114R

PSS Shaft Seal Type A Compression Chart

Imperial Sizes

Shaft Diameter (A)	Stern Tube Diameter (B)	Approx Compressed Length (C)	D
3/4", 7/8", 1", 1-1/8"	1-1/4", 1-1/2", 1-3/4", 2", 2-1/4", 2-1/2"	6" - 6.125"	2.375"
3/4", 7/8", 1", 1-1/8"	2-1/2"	6.625"	2.375"
1-1/4", 1-3/8"	1-3/4", 2", 2-1/4", 2-1/2"	6.625" - 6.75"	2.875"
1-1/4", 1-3/8"	2-3/4", 3", 3-1/4", 3-1/2"	8.125" - 8.313"	2.875"
1-1/2", 1-9/16", 1-3/4", 2"	2", 2-1/4", 2-1/2", 2-3/4", 3", 3-1/4", 3-1/2"	8" - 8.218"	3.75"
1-1/2", 1-9/16", 1-3/4", 2"	3-3/4", 4"	8.405"	3.75"
2-1/4", 2-1/2"	3-1/4", 3-1/2", 3-3/4", 4"	8.625"	4.20"
2-1/4", 2-1/2"	4-1/4", 4-1/2", 4-3/4", 5"	9.25"	4.20"
2-3/4", 3"	4", 4-1/4", 4-1/2", 4-3/4", 5"	9.125" - 9.313"	5"
2-3/4", 3"	5-1/4", 5-1/2", 5-3/4", 6"	9.25" - 9.438"	5"
3-1/4", 3-1/2", 3-5/8", 3-3/4"	4-1/2", 4-3/4", 5", 5-1/4", 5-1/2", 5-3/4", 6"	9.675" - 9.863"	6"

Metric Sizes (mm)

Shaft Diameter (A)	Stern Tube Diameter (B)	Approx. Compressed Length (C)	D
20, 22, 25, 28, 30	30, 40, 45, 50, 60	152 - 156	61
20, 22, 25, 28, 30	65	168	61
32, 35	45, 50, 60, 65	168 - 172	73
32, 35	70, 80, 85, 90	206 - 211	73
38, 40, 45, 50, 55	50, 60, 65, 70, 75, 80, 85, 90	203 - 209	96
38, 40, 45, 50, 55	95, 100	213	96
60, 65	85, 90, 95, 100	219 - 224	107
60, 65	110, 115, 120, 125	235	107
70, 75, 80	100, 110, 115, 120, 125	231 - 237	127
70, 75, 80	135, 140, 145, 150	235 - 240	127
85, 90, 95	115, 120, 125, 130, 135, 140, 145, 150	245 - 250	153

$ 100.00

Quantity

Description
Includes
Documents

Description

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 preventative maintenance. The PSS bellow should 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.

NEVER USE SET SCREWS MORE THAN ONCE!

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. PYI's PSS Maintenance Kit comes with five new set screws included. 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.
Includes

PYI offers a Maintenance Kit that includes the items you need to properly maintain your PSS Shaft Seal. Included in the kit is:
- 1 Bellow
- 2 o-rings
- 5 Set screws
- 4 Hose clamps
- 1 Tube of thread lock
- 1 Allen key
Documents

Enduring quality

Installed a PYI PSS on my new boat 20 years ago - never any issues. Replaced rotor because of slight crevice corrosion ,and bellows etc. The new parts are even higher quality than original. Response and shipping was very prompt.

PYI Rocks! This guys make it so easy to find the seal dimensions req'd, and get the order on the way.

New Seals

Originally ordered maintenance kits but after further inspection of the rotors and graphite flange on my boat needed to be replaced. PYI Representative Eric Young was very helpful in selecting new seals. Delivery was prompt. Thank you. Alan.