Pop-A-Plug® CPI/Perma Medium Pressure Tube Plugs

Perform Heat Exchanger Maintenance on Leaking Condenser and 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.