U.S. Seal MFG. PS-756 Buna Pump Seal - Seat Type 1 Head Type C 1-1/4In Shaft

Description:

The U.S. Seal MFG. PS-756 Buna Pump Seal is a mechanical shaft seal designed to prevent fluid leakage in centrifugal pumps and other rotating equipment while maintaining reliable sealing performance under continuous operation. Commonly installed in industrial pumps, rotary pumps, turbine pumps, compressors, mixers, blenders, and chillers requiring a 1-1/4 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 operation. The PS-756 features a Type C seal head, Type 1 seat, and Buna-N elastomer for general-purpose industrial service.

Applications:

The U.S. Seal MFG. PS-756 Buna Pump Seal is commonly used in centrifugal pumps, hydraulic pumps, rotary pumps, turbine pumps, compressors, mixers, blenders, chillers, and general industrial fluid handling systems. Its Buna-N elastomer provides reliable sealing performance for water, light oils, and other compatible fluids, helping reduce leakage, protect pump bearings, and extend equipment service life.

Technical Specifications:

• Brand: U.S. Seal MFG.
• Model: PS-756
• Product Type: Mechanical Pump Seal
• Shaft Size: 1-1/4 in.
• Head Type: C
• Seat Type: 1
• Seal Outside Diameter: 1.937 in.
• Mating Ring Bore: 1.875 in.
• Mating Ring Thickness: 0.437 in.
• Elastomer Material: Buna-N (Nitrile)
• Primary Ring Material: Carbon
• Seat Material: Ceramic
• Spring Material: Stainless Steel
• Metal Parts Material: Stainless Steel
• Maximum Working Pressure: 150 PSI
• Operating Temperature Range: -40°F to 400°F
• Application: Centrifugal Pumps, Rotary Pumps, Turbine Pumps, Compressors, Mixers, and Blenders

Common Replacements:

• John Crane Type 21 Mechanical Seal, 1-1/4 in. Shaft
• Flowserve Type 21 Equivalent Mechanical Pump Seal
• U.S. Seal MFG. PS-756V Viton Mechanical Pump Seal