Overview
The FI 4750 RS 5750 ESC is a mechanical seal manufactured by ENVIROSEAL ENGINEERING for use in industrial pump and rotating machinery applications. This seal is engineered to provide reliable sealing performance in demanding operational environments where carbon graphite and PTFE materials are required.
Key Features
- Shaft size: 4.75 inches
- Outside diameter: 5.75 inches
- Material: Carbon graphite filled PTFE (polytetrafluoroethylene)
- Seal type: Version F, Type S with greatly reduced flush design
- Discontinu by manufacturer — ideal for maintenance and replacement applications
Technical Specifications
- Shaft Size: 4.75 in
- Outside Diameter: 5.75 in
- Primary Material: Carbon graphite filled PTFE
- Seal Version: F
- Seal Type: S (Greatly Reduced Flush)
- Weight: 1.0 lbs
Typical Applications
The FI 4750 RS 5750 ESC is well-suited for:
- Centrifugal pump sealing in industrial plants
- Rotating machinery protection in food processing and chemical manufacturing
- Mid-range shaft diameter applications requiring robust carbon graphite sealing
- Equipment operating in moderate to high-temperature environments
- Maintenance and OEM replacement programs
Compatibility & Replacements
Compatible With
- Pump manufacturers using standard 4.75″ shaft diameter specifications
- Industrial rotating equipment requiring mechanical seal upgrades
- OEM equipment designed for ENVIROSEAL ENGINEERING seals
Replaces / Drop-In Replacement For
The FI 4750 RS 5750 ESC is a direct replacement for existing ENVIROSEAL ENGINEERING FI 4750 RS 5750 ESC installations. Verify compatibility with your original equipment manufacturer before ordering to ensure proper fit and performance.
Works With
- Standard 4.75-inch shaft mechanical seal applications
- Pump housings designed for carbon graphite PTFE seals
- Industrial rotating machinery requiring Version F, Type S seal configuration












