---
product_id: 469564415
title: "PSS Type A Shaft Seal, PYI Inc"
brand: "pss shaft seal"
price: "€ 1429.82"
currency: EUR
in_stock: true
url: https://www.desertcart.ie/products/469564415-pss-type-a-shaft-seal-pyi-inc
store_origin: IE
region: Ireland
---

# Dripless mechanical face seal ABS, BV, RINA & USCG certified Fits 3/4” to 6” shafts PSS Type A Shaft Seal, PYI Inc

**Brand:** pss shaft seal
**Price:** € 1429.82
**Availability:** ✅ In Stock

## Summary

> 🛥️ Seal the deal with the world’s #1 marine shaft seal — because your boat deserves the best!

## Quick Answers

- **What is this?** PSS Type A Shaft Seal, PYI Inc by pss shaft seal
- **How much does it cost?** € 1429.82 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/469564415-pss-type-a-shaft-seal-pyi-inc)

## Best For

- pss shaft seal enthusiasts

## Why This Product

- Trusted pss shaft seal brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Certified Confidence:** ABS, Bureau Veritas, RINA, and US Coast Guard approvals guarantee top-tier reliability.
- • **Zero Drip, Zero Hassle:** Eliminate bilge water with a 100% watertight seal that outperforms traditional packing glands.
- • **Built to Last, Made in USA:** Durable stainless steel and carbon components ensure low maintenance and long service life.
- • **Smooth Sailing with No Wear:** Floating carbon flange design compensates for misalignment and vibration, protecting your propeller shaft.
- • **Universal Fit for Marine Pros:** Easily retrofits shafts from 20mm to 150mm, perfect for upgrades or new builds.

## Overview

The PSS Type A Shaft Seal by PYI Inc is the leading dripless mechanical face seal designed for marine and industrial shafts ranging from 3/4” to 6”. Certified by ABS, BV, RINA, and US Coast Guard, it offers a 100% watertight, low-maintenance solution that eliminates bilge water and shaft wear. Manufactured in the USA, it’s the trusted retrofit and OEM choice for boat builders worldwide.

## Description

The PSS Shaft Seal is the #1 selling marine mechanical seal worldwide and is installed as standard equipment by many of the worlds most reputable boat builders and boat yards. The PSS Shaft Seal is also recognized as the premiere retrofit (aftermarket) seal on the world market. Boat builders and boat yards recognize the advantages and value of installing the PSS as it eliminates the maintenance, constant adjustment and 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) and wear to the propeller shaft. The PSS Shaft Seal can be easily retrofitted and is available for shafts ranging from 3/4” to 6” (20mm to 150mm).   The PSS 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 the front side of the bellow with hose clamps, and the back end of the bellow fits over the Stern tube and is secured 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 bellow before the rotor is secured to the shaft with set-screws. This compression (pre-load) maintains constant contact between the two flat faces of the stainless-steel rotor and carbon flange, allowing the PSS to compensate for the variable fore and aft 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 problems. The stainless-steel rotor 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.

## Features

- World leading dripless mechanical face seal for marine applications.
- Ideal replacement for packing glands and lip seals in marine or industrial environments
- Highly durable, low maintenance and cost-effective solution.
- Certified by ABS, BV (or Bureau Veritas), RINA, and US Coast Guard approved.
- Manufactured in the USA.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Item Package Dimensions L x W x H | 14.9 x 11.1 x 8.8 inches |
| Package Weight | 8.07 Kilograms |
| Item Dimensions  LxWxH | 13.5 x 10.5 x 8.5 inches |
| Item Weight | 16.5 Pounds |
| Brand Name | PSS Shaft Seal |
| Model Name | 02-312-412 |
| Color | 3 1/2 Inch Shaft Diameter |
| Number of Items | 1 |
| Manufacturer | Seaview -- Dropship |
| Part Number | 02-312-412 |
| Style | 4 1/2 Inch Diameter Stern Tube / Shaft Log |
| Included Components | PSS Shaft Seal |
| Size | 3 1/2 Inch Shaft Diameter |

## Images

![PSS Type A Shaft Seal, PYI Inc - Image 1](https://m.media-amazon.com/images/I/61Cm7hxpAjL.jpg)
![PSS Type A Shaft Seal, PYI Inc - Image 2](https://m.media-amazon.com/images/I/51Lrk+DJepL.jpg)

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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-01-24*