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Black rubber pneumatic test plug, cylindrical with tapered ends, smooth surface, metal air valve on one end, tether strap attached

Safe-T-Seal

Safe-T-Seal TP58 Pneumatic Test Plug 5-8

SKU CH-EPP8-J3QZE

Pneumatic test plug seals 5 to 8 inch pipes with a single chamber rated to 43 psi air or 30 ft water head

  • Seals pipes from 5 in to 8 in with one plug
  • Handles up to 43 psi air back pressure for reliable testing
  • Withstands 30 ft of water head pressure in vertical runs
  • Single inflation chamber simplifies setup and operation
  • Deflated diameter of 4.5 in fits through tight access points

Pneumatic Test Plug 5-8

The Safe-T-Seal TP58 is a pneumatic test plug designed for pipe inside diameters ranging from 5 inches to 8 inches. It uses a single inflation chamber to seal the line during pressure testing. This tool suits plumbers and contractors performing leak checks on drainage or sewer systems.

Compatibility Check Before Ordering

Verify that the pipe inside diameter falls between 5 inches and 8 inches and that the deflated diameter of 4.5 inches can pass through the access point. Ensure your inflation equipment provides a 7/16 inch NPT female connection. The plug handles maximum back pressures of 43 psi air or 30 feet of water head.

Bundled Features and Their Impact

The head tether includes a handle and strap for secure positioning and retrieval during inflation. A smooth body surface reduces friction when inserting the plug into the pipe. The inflated length reaches 23.38 inches to maintain a reliable seal across the test section.

Highlights

  • Seals pipes from 5 in to 8 in with one plug
  • Handles up to 43 psi air back pressure for reliable testing
  • Withstands 30 ft of water head pressure in vertical runs
  • Single inflation chamber simplifies setup and operation
  • Deflated diameter of 4.5 in fits through tight access points

Specifications

BrandSAFE-T-SEAL

Questions about this item

What comes in the box with the Safe-T-Seal TP58 pneumatic test plug and do I need to buy an inflation hose separately?

The package includes the pneumatic test plug with its integrated handle and tether strap; an inflation hose or pump with a 7/16 in NPT female fitting is not included and must be sourced separately.

The plug covers 5 in to 8 in pipe IDs — how do I decide which size range I actually need for my job?

Match the plug to the exact inside diameter of the pipe you are testing; the unit seals any ID from .38 in up to 8 in, so choose it when your pipe falls anywhere in that 5 in to 8 in nominal range.

What does the 43 psi maximum air back-pressure rating mean when I am pressure-testing a pipeline in the field?

It means the inflated plug will hold back up to 43 psi of air pressure behind it; for water tests the equivalent limit is 30 ft of head, so do not exceed those values during the test.

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