Oatey Cherne Gripper Plugs can be used in a variety of applications, including DWV (drain, waste and vent) testing and stack-testing. Ideal for sewer testing and long-term applications, Cherne's Original Gripper Plug is made with glass-reinforced ABS plastic. The End-Of-Pipe Gripper design seals only at the end of the pipe, while the Inside-Of-Pipe Gripper design allows you to position the plug inside the pipe as far as you need. Cherne's Original Gripper Plug comes equipped with an easy-to-install, extra-large, zinc wing nut that won't rust, a natural rubber O-ring and a galvanized carriage bolt to prevent corrosion.

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