Pop-A-Plug® CPI/Perma Tube Plugs

Request Quote  Request Demo

Perform Maintenance on Leaking Condenser & Boiler Tubes

Choosing the wrong plug for your heat exchanger tube leaks can increase downtime and further damage equipment.

EST Group’s Pop-A-Plug Tube Plugs are a permanent mechanical tube plugging solution for leaking heat exchanger, condenser, and boiler tubes. Mechanical tube plugs feature an internally and externally serrated ring designed to maintain a helium leak-tight seal even under extreme thermal and pressure cycling.

Pop-A-Plug Tube Plugs install hydraulically in minutes with an engineered breakaway while offering a controlled installation force to limit operator fatigue and prevent damage to tubes, tubesheets, and surrounding tubes.

Choose from a broad range of tube sizes and materials. Full material traceability documentation available.

Pressure Rating Up to 1,000 PsiG (68.9 BarG) - higher pressures available upon request

Size Range 0.472” to 2.067” (11.99mm to 52.5mm) Tube I.D. - larger/smaller sizes available upon request 

Standard Materials Brass 360/464, Carbon Steel (1018 & 1045), 304/304L Stainless Steel, Copper Nickel 70/30, 316/316L Stainless Steel, Titanium – additional alloys available, contact customer service for full list

Features & Benefits

  • Plug material matches tube material preventing thermal expansion and contraction issues and/or undesirable galvanic interaction
  • Resistant to thermal and pressure cycling
  • Eliminates welded or explosive plugging methods
  • Meets ASME PCC-2* recommendations and EPRI** criteria
  • Lowest lifecycle cost compared to alternative plugging methods
  • Maintains helium leak-tight seal to 1 x 10-6 cc/sec
  • Accommodates Through-the-Tube Plugging applications
  • Large inventory available with 24/7 emergency manufacturing capability


Do you require a higher-pressure tube plug? Check out our Pop-A-Plug P2 High Pressure Tube Plug

*Inspection and Repair of Shell and Tube Heat Exchangers, The American Society of Mechanical Engineers (ASME) PCC-2, Article 312.

** Condenser In-Leakage Guideline, Electric Power Research Institute (EPRI), Palo Alto, CA, 2000, TR-112819 Page 7.