Perko O-Ring for 540 Series Deck Fill Cap, 054000099B, 2.06 Inch Nitrile Rubber Seal

The Perko 054000099B O-Ring is a replacement seal designed for select Perko deck fill assemblies, including the 540 series caps. It creates a watertight seal between the hull and the fill, helping keep water out of the fuel or waste system at the deck fitting. This O-ring is made of nitrile rubber, a material chosen for its resistance to fuel, oil, and marine chemicals, and it is finished in black to match standard Perko deck fill hardware.

The ring has a nominal inside diameter of 2.06 inches and is intended for use in applications requiring a 2-1/8 inch mounting hole. It is compatible with both chrome-finished and polymer Perko deck fill assemblies, making it a straightforward spare or replacement part for boat owners maintaining existing deck fill installations rather than replacing the entire fitting. Each unit ships as a single O-ring.

Specifications

• Brand: Perko
• Manufacturer Part Number: 054000099B
• Material: Nitrile Rubber
• Color: Black
• Nominal Inside Diameter: 2.06 inches
• Mounting Hole Size: 2-1/8 inches
• Compatibility: Chrome-finished and polymer Perko deck fill assemblies
• Unit Count: 1 O-ring
• Weight: 0.01 pounds

Frequently Asked Questions

What is the Perko 054000099B O-Ring used for? It is a replacement seal for select Perko deck fill assemblies that creates a watertight seal between the hull and the fill, including 540 series deck fill caps.

What size mounting hole does this O-ring fit? The Perko 054000099B is intended for use in applications requiring a 2-1/8 inch mounting hole.

What is the inside diameter of this O-ring? The nominal inside diameter of the 054000099B O-ring is 2.06 inches.

What material is the O-ring made from? Perko 054000099B is made of nitrile rubber, chosen for resistance to fuel, oil, and marine chemicals.

Will this O-ring work with a chrome deck fill? Yes, the 054000099B O-ring works with both chrome-finished and polymer Perko deck fill assemblies.

Does this O-ring fit polymer deck fill assemblies too? Yes, it is designed to work with both polymer and chrome-finished Perko deck fill fittings.

How many O-rings come in a purchase? Each order of the Perko 054000099B includes one O-ring.

What color is the O-ring? The 054000099B O-ring is black.

Is this O-ring a genuine Perko part or an aftermarket substitute? The 054000099B is a genuine Perko spare part designed specifically as a replacement component for Perko deck fill assemblies.

Why would I need to replace this O-ring? Over time the seal on a deck fill can wear, crack, or lose its watertight fit, so replacing the 054000099B O-ring restores the watertight seal between the hull and the fill.

Does the 054000099B O-ring stop water from entering the fuel system? It helps create a watertight seal between the hull and the fill to keep water out at that connection point.

Is the Perko 054000099B O-ring easy to install? As a spare seal for the deck fill assembly, the 054000099B O-ring is designed to be swapped in place of the existing worn seal on the fill fitting.