The Expansion Plugs are a reusable mechanical pipe plug designed to create a quick, reliable watertight seal in pipe ends. Ideal for low- and medium-pressure water applications, it uses a simple wing nut that compresses the durable rubber body, expanding it securely against the inside of the pipe to form a leak-resistant seal. No special tools are required, making installation and removal fast and convenient. Manufactured with a durable rubber sealing body, nylon wing nut, and corrosion-resistant hardware, it is suitable for use with PVC, ABS, fibreglass, steel, cast iron, and clay pipe. It is commonly used in fish hatcheries, aquaculture facilities, water treatment plants, plumbing maintenance, leak testing, and temporary pipeline isolation. Creates a fast, watertight seal Suitable for low- and medium-pressure water systems Durable rubber expansion body Corrosion-resistant hardware Nylon wing nut allows tool-free installation Reusable for repeated maintenance operations Suitable for freshwater and saltwater applications Ideal for temporary line isolation and leak testing Compatible with plastic, clay, fibreglass, cast iron, and steel pipe Code Nominal Pipe Size Pressure EP1 1.5” End Plug 40” Head EP2 2” End Plug 40” Head EP3 3” End Plug 40” Head EP4 4” Pipe Plug 40” Head EP6 6” Pipe Plug 30” Head