{"product_id":"seachoice-screw-type-drain-plug-o-ring-transom-fish-well-50-18781","title":"Seachoice Screw-Type Drain Plug with O-Ring Seal — Boat Transom, Fish Well \u0026 Ice Chest (50-18781)","description":"\u003ch2\u003eSeachoice Screw-Type Drain Plug with O-Ring Seal\u003c\/h2\u003e\u003cp\u003eA reliable, positive-sealing drain plug for boat transoms, fish wells, ice chests, and other onboard compartments that require a secure, vibration-resistant drain closure. The screw-type design with fine threads and an integrated O-ring seal keeps water out even under the constant vibration and movement of underway conditions — and the attached plug means you won't lose it overboard during draining.\u003c\/p\u003e\u003ch3\u003eParts Desk Insights\u003c\/h3\u003e\u003cp\u003eThis is the correct drain plug when you need a secure, watertight closure in a 1\" diameter drain hole and want a plug that stays attached to the fitting when removed. The fine-thread screw design is specifically suited to high-vibration applications where a push-in or friction-fit plug would work loose over time — making it the preferred choice for transom drains and fish well drains on trailered boats that see regular road vibration. The two-screw flange mount (1-1\/2\" x 2\" flange, two #8 screws) provides a secure, flush installation. Confirm your drain hole is 1\" diameter before ordering.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDrain hole size: 1\" diameter\u003c\/li\u003e\n\u003cli\u003eMounting flange: 1-1\/2\" x 2\"\u003c\/li\u003e\n\u003cli\u003eMounting hardware: Two #8 screws\u003c\/li\u003e\n\u003cli\u003eSeal type: O-ring for positive watertight seal\u003c\/li\u003e\n\u003cli\u003eThread type: Fine thread for vibration resistance\u003c\/li\u003e\n\u003cli\u003ePlug: Attached (captive — will not separate from fitting)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBoat transoms\u003c\/li\u003e\n\u003cli\u003eFish wells\u003c\/li\u003e\n\u003cli\u003eIce chests and cooler compartments\u003c\/li\u003e\n\u003cli\u003eOnboard storage compartments requiring a drain\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"LNS","offers":[{"title":"Default Title","offer_id":51199423709220,"sku":"50-18781","price":10.49,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0743\/5799\/7604\/files\/50-18781.jpg?v=1785605193","url":"https:\/\/marisolmarine.com\/products\/seachoice-screw-type-drain-plug-o-ring-transom-fish-well-50-18781","provider":"Marisol Marine Company","version":"1.0","type":"link"}