Heavy-Duty Rubber Expansion Plug for Large Pool Plumbing Lines
The #13 Expansion Plug with Nylon Wing Nut is designed to securely seal larger pool plumbing pipes, typically fitting internal diameters between 2-1/2" and 2-3/4". Constructed from durable, chemical-resistant rubber and featuring a corrosion-proof nylon wing nut, this plug provides a reliable, watertight seal during pool winterization, pressure testing, or maintenance.
Its hand-tightened wing nut allows for quick, tool-free installation and removal, making it an essential tool for both professional pool technicians and DIY pool owners.
Size: #13 – fits most 2-1/2" to 2-3/4" pool pipes
Made from heavy-duty, chemical-resistant rubber
Nylon wing nut for easy, tool-free tightening
Ideal for winterizing, pressure testing, and temporary sealing
Suitable for return lines, drain lines, and cleaner lines
Provides a strong, leak-proof seal
Prevents water intrusion during off-season maintenance
Durable and reusable for multiple uses
Compatible with residential and commercial pool plumbing
Protect your pool’s plumbing system with the reliable #13 Expansion Plug with Nylon Wing Nut—the perfect choice for sealing larger pipes quickly and securely.
