Technical Products | #1 | 1/2" Pipe Winter Plug with Nylon Wing Nut

This #1 winter plug is designed to seal compatible 1/2-inch pool and spa plumbing lines during winterization, maintenance, pressure testing, and repairs. Featuring an expandable rubber body and a durable nylon wing nut, it creates a secure, watertight seal to help protect plumbing from water intrusion and freeze damage.

Ideal for seasonal pool closing and routine service work, this reusable expansion plug provides a dependable sealing solution for residential and commercial pool systems.

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Key Features

• Fits compatible 1/2" pipe openings

• Expandable rubber winter plug

• Durable nylon wing nut for tool-free tightening

• Creates a secure, watertight seal

• Reusable for seasonal maintenance

• Ideal for winterization, pressure testing, and plumbing repairs

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Product Overview

The Technical Products #1 Winter Plug is engineered to temporarily seal compatible 1/2-inch plumbing lines during pool winterization and equipment servicing. Tightening the nylon wing nut compresses the rubber body, creating a reliable seal that helps prevent water from entering or escaping the plumbing system.

This expansion plug is commonly used by pool service professionals and homeowners for winter pool closings, leak detection, plumbing isolation, and equipment maintenance. Verify the pipe size before installation to ensure the correct fit and dependable sealing performance.