4" Mechanical Test Plug, 3 Pack Pipe Plugs for DWV Pipe

Designed for reliable plumbing pressure testing and temporary sealing tasks, this 4 Inch End of Pipe Gripper Plug features a heavy-duty ABS body combined with an advanced mechanical expansion design for dependable, leak-proof performance. The ergonomic wing nut mechanism allows for lightning-fast installation and removal without requiring specialized plumbing tools. Once hand-tightened, the heavy-duty rubber expansion seal creates a secure, watertight fit inside compatible pipe openings, making it perfect for drain testing, routine maintenance, sewer isolation, and temporary pipe blocking during repairs or remodeling. Constructed with durable, anti-corrosion ABS material and reinforced zinc-plated hardware, these mechanical test plugs are built for repeated, long-term use in residential, commercial, and workshop environments. Each package includes 3 pieces of 4-inch end of pipe gripper plugs, providing an exceptional, high-value solution for multi-project use and professional contractors.

• PROFESSIONAL-GRADE MECHANICAL TEST PLUG: Designed to create a secure seal inside standard 4-inch DWV pipe for pressure testing, leak testing, temporary pipe isolation and plumbing maintenance. Ideal for residential, commercial and contractor applications.
• SECURE EXPANSION SEAL WITHOUT SLIPPING: Premium expansion rubber compresses evenly against the pipe wall while the reinforced ABS body and corrosion-resistant steel hardware deliver reliable sealing performance with minimal risk of slipping during testing.
• TOOL-FREE EASY INSTALLATION: Designed with an ergonomic zinc-plated steel wing nut for quick, hand-tightened installation and effortless removal. No specialized plumbing tools, wrenches, or glues are required, making it a reliable and reusable solution for contractors and DIYers alike.
• UNIVERSAL 4" PIPE COMPATIBILITY: Perfect for sealing standard 4-inch ID (Inside Diameter) pipes, including PVC, ABS, copper, and cast iron plumbing lines. Ideal for residential and commercial drain isolation, sewer cleanouts, and temporary pipe blocking during repair or remodel projects.
• GREAT VALUE 3-PACK FOR PROFESSIONALS: This convenient 3-piece contractor pack allows maintenance professionals, plumbers, and homeowners to seal multiple pipe openings simultaneously across various job sites, saving time and lowering project costs.