Overview
This 2-1/2″ (73.0mm OD) gasket is a replacement sealing component for flexible grooved coupling systems, specifically designed for Series 7705, 7771, 7707, and K-9 models. These gaskets are critical for maintaining pressure integrity and preventing leaks in mechanical power transmission and industrial piping applications. The 73.0mm outer diameter makes this the larger variant of the standard gasket line, suited for larger coupling assemblies requiring robust sealing performance.
Key Features
- 2-1/2″ (73.0mm) outer diameter for Series 7705, 7771, 7707, K-9 flexible grooved couplings
- Compatible with standard industrial gasket materials (nitrile or EPDM grades available)
- Drop-in replacement for OEM gaskets on grooved coupling assemblies
- New, open-box condition ready for immediate use
- Cost-effective alternative to OEM replacement kits
Technical Specifications
- Outer Diameter: 73.0mm (2-1/2″)
- Application: Flexible grooved couplings, mechanical seals
- Compatible Series: 7705, 7771, 7707, K-9
- Material Grade: Nitrile or EPDM (verify with your system)
- Condition: New, open box
Typical Applications
Flexible grooved coupling gaskets are essential components in:
- Industrial piping systems and fluid transfer lines
- Mechanical power transmission assemblies
- Pump coupling sealing systems
- HVAC and water circulation equipment
- OEM equipment maintenance and repair
Compatibility & Replacements
Compatible With
- Series 7705 flexible grooved couplings
- Series 7771 coupling assemblies
- Series 7707 coupling systems
- Series K-9 compatible equipment
Replaces / Drop-In Replacement For
- OEM 7705 gaskets (73.0mm OD variant)
- Aftermarket 7771 gasket replacements
- Standard 7707 coupling seals
- K-9 series gasket components
Works With
- Shurjoint and equivalent flexible grooved coupling platforms
- Standard nitrile and EPDM gasket specifications
- Industrial coupling maintenance kits








