Marine Deck Fill Cap – Boat Water & Fuel Hatch Cover with Stainless Steel Chain

Key Features

• Stainless Steel Retaining Chain — Cap stays attached to the fitting at all times; never lost or misplaced
• Color-Coded Caps — Blue = Water, Red = Fuel; prevents accidental cross-filling
• PUM + Nylon Construction (No Fiberglass) — High hardness, corrosion-resistant, UV-resistant, and anti-aging material
• Tool-Free Twist Open — Easy hand-operated rotary cap; no tools required
• Standard 50mm Cutout — Fits most pre-drilled boat and RV deck holes
• 38mm Inner Hose Connection — Compatible with standard marine hose fittings
• Flush-Mount Design — Low-profile, clean finish that sits flush with the deck surface

Specifications

• Material: PUM + Nylon (fiberglass-free)
• Overall Height (H): 70mm
• Flange Outer Diameter (D): 85mm
• Cutout Diameter (d): 50mm
• Hose Inner Diameter (di): 34mm
• Hose Outer Diameter (d2): 38mm
• Mounting Hole Spacing (d1): 40mm
• Available Colors: White body / Black body
• Cap Color: Blue (Water) or Red (Fuel)

Ideal Applications

• Boat and yacht water tank fill points
• Marine fuel deck fills
• RV and campervan water inlets
• Pontoon boats and motorboats
• Any vessel requiring a sealed, labeled deck access point