These popular seals kits are specifically designed for the particular Coxreels swivel you are rebuilding.
Replacement O-Ring and Seal Kits for Swivels
Power Transmission - Coxreels - PDF Catalogs, Technical Documentation
Troubleshooting a swivel
Coxreels DM Series Dolly Mount Portable Hand Crank Hose Reel
How To Fix A Leaking Hose Reel Swivel
Coxreels 112W-1-100 Hand Crank Steel Welding Hose Reel
Coxreels EZ-P-LP-325 3/8x25' 300 PSI EZ-Coil® Safety Series Spring Retractable Hose Reel
Replacing Your Hose Reel Swivel
Coxreels replacement swivel with Viton seal. 3/4 NPT size.
Coxreels 426-1 Replacement Swivel with Viton Seal, 3/4 NPT