Product Description Secure your plumbing system with confidence using our USA-made 1/2" Threaded Pipe Plug, expertly engineered from high-performance marine-grade composite for long-term use in harsh marine environments. Whether you're sealing a pipe temporarily for maintenance or installing a permanent closure, this plug provides a leak-proof, corrosion-resistant seal that boat owners and marine technicians can trust. Designed for 1/2" standard tapered pipe threads (which measure approximately 3/4" across the outside), this plug fits snugly and securely, helping to prevent leaks, pressure drops, and water intrusion. The hex head design ensures quick and easy tightening with a standard wrench, making installation and removal a breeze—even in tight or awkward spaces. Compatible with plumbing systems from top boat brands including Bayliner, Tracker Marine, Grady-White, Sea Ray, and Boston Whaler, this threaded plug is ideal for sailboats, fishing boats, pontoons, yachts, and more. Proudly manufactured in the USA, our threaded plug reflects the highest standards in marine-grade quality, offering durability, performance, and peace of mind—trip after trip. Product Specifications: Thread Size: 1/2" standard tapered pipe thread Outside Thread Measurement: Approx. 3/4" Material: Marine-grade composite (non-corrosive, impact-resistant) Design: Hex head for easy wrench-tightening Made In: USA Use Case: Seals unused pipe fittings in marine plumbing systems WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.
