{"product_id":"perko-054000099b-o-ring-for-540-series-deck-fill-cap-nitrile-rubber-seal-2-1-8-in-mounting-hole","title":"Perko O-Ring for 540 Series Deck Fill Cap, 054000099B, 2.06 Inch Nitrile Rubber Seal","description":"\u003cp\u003eThe 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.\u003c\/p\u003e\u003cp\u003eThe 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.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Perko\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 054000099B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Nitrile Rubber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNominal Inside Diameter:\u003c\/strong\u003e 2.06 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Hole Size:\u003c\/strong\u003e 2-1\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Chrome-finished and polymer Perko deck fill assemblies\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit Count:\u003c\/strong\u003e 1 O-ring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.01 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Perko 054000099B O-Ring used for?\u003c\/strong\u003e 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.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat size mounting hole does this O-ring fit?\u003c\/strong\u003e The Perko 054000099B is intended for use in applications requiring a 2-1\/8 inch mounting hole.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the inside diameter of this O-ring?\u003c\/strong\u003e The nominal inside diameter of the 054000099B O-ring is 2.06 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the O-ring made from?\u003c\/strong\u003e Perko 054000099B is made of nitrile rubber, chosen for resistance to fuel, oil, and marine chemicals.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this O-ring work with a chrome deck fill?\u003c\/strong\u003e Yes, the 054000099B O-ring works with both chrome-finished and polymer Perko deck fill assemblies.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes this O-ring fit polymer deck fill assemblies too?\u003c\/strong\u003e Yes, it is designed to work with both polymer and chrome-finished Perko deck fill fittings.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow many O-rings come in a purchase?\u003c\/strong\u003e Each order of the Perko 054000099B includes one O-ring.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat color is the O-ring?\u003c\/strong\u003e The 054000099B O-ring is black.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs this O-ring a genuine Perko part or an aftermarket substitute?\u003c\/strong\u003e The 054000099B is a genuine Perko spare part designed specifically as a replacement component for Perko deck fill assemblies.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhy would I need to replace this O-ring?\u003c\/strong\u003e 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.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 054000099B O-ring stop water from entering the fuel system?\u003c\/strong\u003e It helps create a watertight seal between the hull and the fill to keep water out at that connection point.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the Perko 054000099B O-ring easy to install?\u003c\/strong\u003e 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.\u003c\/p\u003e","brand":"Perko","offers":[{"title":"Default Title","offer_id":48991104860379,"sku":"PKO-054000099B","price":3.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Perko-054000099B-Replacement-O-Ring__66249.1722509741.500.750.jpg?v=1785188745","url":"https:\/\/www.goodvibesmarina.com\/products\/perko-054000099b-o-ring-for-540-series-deck-fill-cap-nitrile-rubber-seal-2-1-8-in-mounting-hole","provider":"Good Vibes Marina","version":"1.0","type":"link"}