Shaft Seal, PS-309, 7/8″ Shaft Size, Buna | PS-309

💧 Shaft Seal, PS-309, 7/8″ Shaft Size, Buna

Made by U.S. Seal Mfg., manufacturer part number PS-309. It is listed for the equipment shown below, so check the model on your own unit against that list. If your old part carries one of the cross-reference numbers further down, this is listed as its alternative.

✅ Listed for

• Aqua Flo “AC” Series Pump

🔄 Cross-reference part numbers

These part numbers are listed as alternatives for this part.

7/8″ Buna Shaft Seal | Model PS-309

Product Overview

We supply this specialized shaft seal designed for 7/8″ applications. This seal features reliable Buna construction and is engineered to provide consistent performance in larger shaft diameter pump systems.

Key Features and Benefits

• Precision 7/8″ shaft design
• Quality Buna elastomer construction
• Enhanced sealing geometry
• Heavy-duty spring assembly
• Larger diameter optimization
• Professional-grade materials
• Durable construction

Technical Specifications

Specification	Detail
Model	PS-309
Shaft Size	7/8 inch
Elastomer Type	Buna
Face Materials	Carbon/Ceramic
Spring Material	Stainless Steel
Maximum Temperature	225°F (107°C)
Maximum Pressure	175 PSI
Rotation	Bi-directional
Design Type	Medium Duty
Application	Commercial/Industrial

🔧 Parts and fittings for this

Installation and Maintenance

Professional installation ensures optimal seal performance. The ceramic seat must be installed with uniform pressure, and sealing faces must be thoroughly cleaned before assembly. Proper alignment is particularly crucial for larger shaft diameters.

Compatibility

Engineered for use with:

• 7/8″ shaft pumps
• Commercial applications
• Larger pump systems
• Medium-duty operations

Performance Features

Designed to deliver:

• Reliable sealing pressure
• Consistent performance
• Good chemical resistance
• Smooth operation
• Extended service life
• Enhanced reliability

Note: Always verify seal compatibility with your specific pump model before installation