3/4" Fittings & 1" Pipe Winterizing Plug

The 800-4 Winterizing Plug is a rubber expansion plug designed to seal 3/4" fittings and 1" pipes during pool and spa winterization. Made with quality rubber, stainless steel fasteners, and a nylon wing nut, this plug expands to fill and seal the pipe opening, preventing water ingress that can cause freeze damage to your plumbing. Suitable for use on skimmer lines, return lines, and cleaner lines. Reusable year after year.

SKU: 800-4