IPS 83689 3.5-Inch Flush Mechanical Cleanout Repair Plug | Cast Iron Plumbing

Meet the IPS 83689 3.5-Inch Flush Mechanical Cleanout Repair Plug, a dedicated solution for cast iron cleanout fittings with worn or stripped threads. This plug installs cleanly and sits flush with the pipe surface, helping you regain control of hard-to-reach drain lines without a full replacement.

Designed to seal behind threads with a rubber gasket, it does not rely solely on damaged threads. The result is a steadier seal even when the threads are not perfect, and it can withstand up to 50 ft of back pressure in typical horizontal installations. The compact, flush profile reduces protrusion and simplifies future access for maintenance or inspections.

Key benefits

• Flush installation that sits level with the pipe surface for neat, unobtrusive repairs
• Rubber gasket seals behind threads, not on worn surfaces
• Protects against air leaks by sealing without thread integrity
• Back pressure tolerance up to 50 ft supports demanding plumbing lines
• Comes with Allen wrench for quick setup
• Made in the United States with purposeful engineering
• Sturdy hardware design helps prevent parts from falling into the pipe

Practical uses and scenarios

• Repairing worn cleanout fittings in older homes or commercial buildings
• A fast, non-invasive alternative to full cleanout replacement
• Ideal for technicians performing maintenance repairs in tight spaces

What you get and how it helps

• 3-1/2 inch plug designed for standard cast iron cleanouts
• Durable rubber gasket and built-in sealing system
• Allen wrench included for easy installation and adjustments
• Manufactured in the United States, reflecting IPS quality
• Patented design (Patent 7,464,727) informing its sealing geometry

Usage tips: ensure the cleanout area is clear, align the plug with threads, and tighten until flush. While this plug enhances sealing, always follow local codes and safety practices for drain work.

Durable hardware and design notes

This plug ships with a stainless steel fastener and a dedicated wrench for reliable assembly in tight spaces. The design emphasizes a robust seal and ease of use for professional settings.

Origin and quality

Made in the United States, IPS focuses on domestic manufacturing and professional-grade plumbing components, with engineering details that support dependable service in rough plumbing environments.