Sea-Dog Sea Dog Emergency Deck Fill Plug. Fits most 1-1/2" hose deck fills in the event you lose your cap. For temporary use only until you can replace your OEM cap. Constructed of fuel resistant Nitrile-Buna rubber. Features of Sea-Dog 357390-1 Sea Dog Emergency Deck Fill Plug Nitrile-Buna Rubber Corrosion resistant Fuel Resistant Fits most 1-1/2" hose deck fills Designed for quick and simple application Package Contents: Sea-Dog 357390-1 Sea Dog Emergency Deck Fill Plug Sea-Dog 357390-1: Sea Dog Emergency Deck Fill Plug