0.5"-1" Pool Expansion Plugs, #1–#5 Rubber Winter Pipe Plugs 4 Pack

rotect your swimming pool plumbing with dependable expansion plugs engineered for seasonal winterizing and year-round maintenance. Constructed from durable NBR rubber with stainless steel hardware and oversized plastic wing nuts, these pool expansion plugs create a secure temporary seal inside pool plumbing openings ranging from 0.5 inch to 1 inch. Perfect for winter pool closing, leak testing, plumbing maintenance, equipment servicing and temporary pipe isolation. The expanding rubber design helps create a reliable seal while allowing fast installation and removal without special tools. Whether you're preparing your pool for winter or performing routine maintenance during the swimming season, these reusable rubber pool plugs offer dependable performance for return lines, cleaner ports, skimmer lines and other compatible plumbing openings. Designed for homeowners, pool service companies and maintenance professionals looking for a simple, reusable solution for seasonal pool care.

• UNIVERSAL POOL EXPANSION PLUG: Designed to seal 0.5" to 1" pool plumbing openings, this pool expansion plug is ideal for pool winterizing, pool maintenance, temporary pipe sealing, leak testing, and equipment servicing. Compatible with return lines, cleaner ports, skimmer lines and other small plumbing openings.
• DURABLE NBR RUBBER FOR A SECURE SEAL: Manufactured from premium NBR rubber, these rubber expansion plugs compress evenly to create a dependable seal while resisting wear from repeated seasonal use. Built for reliable performance during winter pool closing and year-round maintenance.
• EASY HAND-TIGHTEN INSTALLATION: An oversized plastic wing nut allows fast installation without special tools, while the stainless steel bolt provides consistent compression for a secure fit. Quickly install or remove these pool pipe plugs whenever maintenance is required.
• IDEAL FOR WINTERIZING & POOL REPAIRS: Use these pool winter plugs to help protect plumbing from freeze damage during seasonal closing, or temporarily isolate plumbing while repairing pumps, filters, heaters and other pool equipment.
• REUSABLE FOR HOMEOWNERS & POOL PROFESSIONALS: Designed for DIY pool owners and professional service technicians, these reusable expansion pipe plugs provide dependable sealing for routine maintenance, troubleshooting and seasonal winterizing.