Heavy-Duty Material: Crafted from thickened natural rubber, this rubber drain test ball offers exceptional durability and high expansion capabilities for reliable pipe sealing.Versatile Function: Designed as essential plumbing supplies, these airbags effectively block sewer lines and cast iron pipes during essential water closure tests.High Expansion Design: This inflatable pipe plug features a high-elasticity bladder that can expand up to 1.5 times its original size to ensure a leak-proof seal in various pipe diameters.Reliable Sealing: Acting as a professional-grade pipe stopper, the unit provides a secure, airtight fit that prevents water flow and backflow during construction or repair work.Reusable Tool: This durable pipe plug is built for repeated use by plumbers and construction workers, offering a cost-effective solution for drainage pipe maintenance and testing.
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