U.S. Seal MFG. PS-805 Mechanical Shaft Pump Seal

Description:

The U.S. Seal MFG. PS-805 Pump Seal is a mechanical shaft seal designed to prevent fluid leakage in centrifugal pumps and other rotating fluid-handling equipment while maintaining reliable sealing performance under continuous operation. Commonly installed in industrial pumps, HVAC circulation systems, water treatment equipment, chemical processing plants, and OEM fluid handling systems requiring a 1-3/8 inch shaft seal. Maintenance technicians, pump rebuilders, and system integrators use this pump seal for equipment repair, preventive maintenance, and replacement of worn OEM mechanical seals to restore efficient, leak-free pump operation. The PS-805 features a Type C seal head, Type 3 seat, and Buna-N elastomer for dependable general-purpose industrial service.

Applications:

The U.S. Seal MFG. PS-805 Pump Seal is commonly used in centrifugal pumps, industrial water pumps, HVAC circulation pumps, cooling systems, chemical transfer pumps, irrigation equipment, and general fluid handling applications. Its Buna-N elastomer and carbon/ceramic sealing faces provide reliable performance in water, light oils, and other compatible industrial fluids while helping minimize leakage, protect pump bearings, and extend equipment service life.

Technical Specifications:

• Brand: U.S. Seal MFG.
• Model: PS-805
• Product Type: Mechanical Pump Seal
• Shaft Size: 1-3/8 in. (1.375 in.)
• Head Type: C
• Seat Type: 3
• Seat Outside Diameter: 2.000 in.
• Elastomer Material: Buna-N (Nitrile)
• Seat Material: Ceramic
• Primary Ring Material: Carbon
• Spring Material: Stainless Steel
• Metal Parts Material: Stainless Steel
• Maximum Working Pressure: 200 PSI
• Operating Temperature Range: -40°F to 225°F
• Manufacturer Part Number: 52-115-605-801
• Application: Centrifugal Pumps and Industrial Fluid Handling Equipment

Common Replacements:

• John Crane Type 21 Mechanical Seal, 1-3/8 in. Shaft
• Flowserve Type 21 Equivalent Mechanical Pump Seal
• U.S. Seal MFG. PS-805V Viton Pump Seal Equivalent