Technical Products SP216CC #16 Winter Plug - Rubber Plug with Black/White Colored Nylon Wingnut For 4" Pipe, 4.64" OD

🧊 Technical Products SP216CC #16 Winter Plug – For 4" Pipe (4.64" OD)

Part #SP216CC | Heavy Duty Rubber Expansion Plug | Black/White Nylon Wingnut

Protect your pool lines during winter with the Technical Products SP216CC #16 Winter Plug. Designed for secure, leak-proof sealing of 4" pool pipes (4.64" outer diameter), this robust expansion plug blocks return lines, pipes, and fittings, preventing water entry and costly freeze damage during the off-season.

• 🔒 Secure Winterizing – Expands to seal tightly, protecting plumbing from ice damage
• 🛡️ Durable Construction – Made with non-corrosive heavy-duty nylon, stainless steel, and premium rubber
• ⚙️ Easy-Turn Wingnut – Ergonomic nylon wingnut turns smoothly and provides up to 50% greater tightness than standard plugs
• 💧 Leak-Proof Fit – Reliable seal for return lines, skimmers, and other pool fittings
• ✅ Compatible With: 4" PVC, copper, or galvanized pool plumbing (4.64" OD)

How to Use:

1. Insert the winter plug into the pipe or fitting opening until snug.
2. Turn the nylon wingnut clockwise until the rubber expands and creates a watertight seal.
3. Double-check tightness to ensure full protection throughout the winter.

🧰 Ideal For: Winterizing pool return lines, skimmers, cleaner lines, and other exposed plumbing. Essential for in-ground and above-ground pools in freezing climates.

Premier Pool & Spa offers a full line of Technical Products winterizing supplies and replacement parts to keep your pool protected year-round. Contact our experts for help selecting the right size plug for your plumbing.