ultem plug

ULTEM 2300®

High Performance Polymer Tube Plug

The perfect solution when Metallic plugs are NOT ideal but an equally durable plug is a necessity.

Truly the most durable Non-Metallic Plug on the market for this application. We manufacture this plug using a High Performing 30% Glass filled Polymer which offers continuous stability in conditions requiring high heat/high tensile strength.

The most important benefit of using a Non-Metallic plug is that there are absolutely NO metal parts in this plug, which eliminates the potential for Galvanic action inside the tubes. Galvanic action can lead to severe pitting and premature deterioration of the tubes in some applications.

For more information on how our Non-Metallic plug can work for you or for the specific properties of the ULTEM 2300®, please contact HEPCO’s tube plug professionals at (800) 472-8484, or request a quote on our contact page.

Key Benefits:

Will not fracture / distort tube or tube sheet


Easily Installed & Extracted


Ideal for coated surfaces

No Galvanic Action inside tube

Please refer to our questions and answers section for additional information regarding HEPCO’s condenser tube plug specific temperature ranges, low level radiation safety, life expectancy, and other important particulars.

Plug Part Number Description in .001 Dimensions
7/8″-U-D | 7/8″-U-S fits .777 to .837 I.D. fits 7/8″ tube 18 to 25 BWG
1″-U-D | 1″-U-S fits .902 to .962 I.D. fits 1″ tube 18 to 25 BWG
1 1/8″-U-D | 1 1/8″-U-S fits 1.027 to 1.087 I.D. fits 1 1/8″ tube 18 to 25 BWG
1 1/4″-U-S fits 1.152 to 1.212 I.D. fits 1 1/4″ tube 18 to 25 BWG

Heat Exchanger Products Corp manufactures the most reliable silicone condenser tube plugs on the market today for
several industries, including: electrical generating plants both nuclear and fossil, pulp and paper and petro-chemical.