Tank O Ring Replacement For FNS And Nautilus Pool Filters O 420 Fits FNS 24 36 48 60 DE Models Also Compatible With Seahorse FSH And FG Filters Durable Sealing Kit

O-420 Tank O-Ring for Pentair FNS Nautilus DE (Single)
✔️ Black trapezoidal tank O-ring, 19-1/8 in ID, 3/8 in cross

This O-Ring is a replacement seal for Pentair FNS and Nautilus DE pool filters, designed to seal the tank and prevent leaks. It also works with Seahorse FSH/FG filters.

✅ Inside Diameter: 19-1/8 in (485 mm)
✅ Cross Section: 3/8 in (9.5 mm)
✅ Type: New-style trapezoidal tank O-ring
✅ Fits: FNS 24, FNS 36, FNS 48, FNS 60 DE; Seahorse FSH/FG
✅ Color: Black

💡 What is a tank O-ring used for in pool filtration systems?

This handy seal helps prevent leaks and keeps filter pressure steady.

- Seals the tank and lid interface in Pentair FNS and Nautilus DE filters - Replaces worn O-rings to prevent leaks and maintain pressure - Compatible with Seahorse FSH/FG models and 24/36/48/60 DE units - Easy installation as a standard O-ring replacement part✝️