Conform to wide and out-of-round pipes with these inflatable plugs. Also known as pneumatic plugs, they're designed for temporary seals since they can lose pressure over time. They’re better for lower-pressure applications than water-inflatable plugs. Inflate them with a hand pump; an air compressor may overinflate the plug and cause damage.

Maximum air back pressure is the amount of pressure a plug can withstand without moving. Maximum water back pressure refers to the pressure resulting from the height of the water above the plug.

Plugs with a canvas sleeve keep gas, odor, and debris from leaking out through the seal. This makes them good for high-temperature applications, such as in pipe that’s being welded. The sleeve also protects against scrapes from rough pipe walls. Use the loops on the outside to route hose through your pipe to vent while welding, or to connect lines for pulling these plugs through your pipe.

Plugs with a pressure-relief valve release excess pressure to reduce the risk of overinflating and rupturing.

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