PSS mechanical seal for water utility, mixing tanks and water filtration systems.

Water Utility, Mixing Tanks &
Water Filtration Systems

The PSS Shaft Seal’s durability, reliability, simplicity, flexibility, ease of installation and maintenance along with PYI’s ability to customize mechanical sealing solutions in a very short period makes this a beneficial solution for any surface water utility using horizontal mixers on their flocculation / mixer basins.

Compensates For Misalignment

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

Simple Installation

Easy installation results in very limited downtime.

Why PSS?

Flexible Design: In addition to carrying standard sizing, a major advantage of the PSS Shaft Seal is its ability to be customized to adapt to an existing installation or design. Because of the ability to design the seal to fit most existing systems, engineers are unconstrained by seal size requirements. The time frame for custom seals is usually very low, 3 to 4 weeks.

Reliable & Durable: Due to its simple design the PSS Shaft Seal is durable and reliable, with a typical life span of 25,000 running hours. Under clean water conditions the seal can exceed 100,000+ running hours. The unique "float design" & flexibility of the PSS Shaft Seal allows for substantial axial movement of the shaft while still operating correctly.

Low maintenance & Ease of Installation: Minimal maintenance is required under normal working conditions with replacement parts readily available. Unlike other sealing systems, the seal does not wear the shaft or surrounding materials during operation which results in longer maintenance intervals.


All PSS mechanical seals have these certifications.

ABS Certified

Bureau Veritas Certified

RINA Certified


Materials: Rotor: 316L stainless steel
Carbon Stator: high density, resin impregnated carbon graphite
Bellow: Five ply cloth inlay with flurosilicone outer
Size: Can manufacture to any size and application
Operating Temperature: -25°F to +225°F (-31°C to +107°C)

PSS Seal Components

  1. Nitrile o-rings
  2. Collar clamp
  3. 316L stainless steel rotor
  4. Set screws
  5. Nylong washers
  6. Stainless steel hose barb
  7. Carbon graphite stator
  8. T-Bolt Clamp Jacket - rubber hose clamp protectors
  9. Steel hoops
  10. Nitrile or silicone reinforced bellow (depending on requirements)
  11. Hose clamps



What Is A PSS Shaft Seal?