Deck Fill Cap O-Rings 5 Pack For 540 Series, Replacement Seals For Gas, Diesel, Water, And Waste Filler Caps For Boats, Fits Aluminum And Stainless Ports, Great For Marine Maintenance And Backup Kits

5-Pack Deck Fill Cap O-Rings for Perko 540 Series
✔️ Fits Perko 540/0540 deck fill caps; 1.75in ID, 0.14in thick

These replacement O-rings fit Perko 540/0540 deck filler caps and work with threaded aluminum or stainless steel ports on boats, sailboats, and other vessels. They're ideal for regular maintenance or seasonal use to preserve seal integrity.

✅ Includes five deck fill O-rings for gas, diesel, water, or waste systems
✅ Direct replacement for Perko 54000099B gaskets
✅ Marine-grade oil-resistant rubber handles saltwater, UV
✅ Fits 1.75 in ID × 0.14 in thickness gaskets (44.5mm × 3.5mm)
✅ Compatible with Perko fuel cap gaskets and deck fill gaskets

💡 What is a deck fill cap O-ring used for and why replace it with a Perko 540 series seal?

This handy seal helps prevent leaks around deck fillers on boats.

• Seals gas, diesel, water, and waste fill ports for marine systems
• Direct replacement for Perko 54000099B gaskets
• Marine-grade oil-resistant rubber withstands saltwater and UV
• Fits aluminum and stainless ports on boats and yachts

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