Expandable Rubber Pipe Plug, Go-To Leakproof Seal for 2-9/16 to 3-1/8 Inch Inner Diameters, Ideal for Pool Plumbing and Boat Maintenance, Quick Fit for Low-Pressure Tests, Winterization Ready

Expandable Rubber Pipe Plug with Leakproof 65-80mm Seal
✔️ Fits 65-80 mm ID; quick expansion with Allen wrench

This expandable rubber pipe plug delivers a tight, leakproof seal for low-pressure testing and maintenance, commonly used in pool plumbing and boat drainage systems to prevent water leakage during inspections, repairs, and winterization. It’s built with stainless steel and rubber to resist antifreeze, oil, and heat, ensuring reliable sealing and reuse.

✅ Inner diameter range: 2-9/16 in - 3-1/8 in (65-80mm) ID only
✅ Material: stainless steel and rubber for durability and reuse
✅ Easy expansion: includes Allen wrench; clockwise to seal, counterclockwise to release
✅ Applications: plumbing, pool lines, boat drains; winterization ready
✅ Resistant to antifreeze, oil, and heat for reliable sealing

💡 What is a typical use case for a pipe plug in home and marine projects?

This handy device keeps systems sealed during low-pressure testing, winterization, and maintenance. - 65-80 mm ID pipe plug for leak testing in pool plumbing and boat drain systems
- expansion plug with Allen wrench for quick, reusable sealing
- stainless steel and rubber construction resists antifreeze, oil, and heat
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