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Brass Tube Plugs

Our brass tube plugs are made with a brass nut and bolt assembly. We manufacture the collar and washers from a non-water soluble hard plastic called Hytrel and the silicone parts are of a vulcanized silicone rubber.

We offer our brass tube plugs in either double size (two silicone parts) or a single size (one silicone part). The single plugs are recommended for lower pressures and the doubles are ideal for pressures up to 200 psi*. With a matching Pre-Set Torque Wrench Installation Kit to accompany your brass heat exchanger tube plugs, installation will be convenient and simple.

*7/8″-1 1/4″ sizes up to 200 psi – 5/8″-3/4″ doubles up to 150 psi prolonged use.

Important Benefits:

Will not fracture / distort tube or tube sheet

Non-corrosive easily installed / extracted


Ideal for coated surfaces

Please refer to the questions and answers section for more information about HEPCO’s brass tube plugs and specifics about the wide range of condenser tube plugs offered. Still have questions? Let the experts at HEPCO guide you to the answers and the correct tube plug for your industry. Call HEPCO at 800-472-8484 to speak with a heat exchanger tube plug professional, or request a sample tube plug using our contact form.

Plug Part Number Description in .001 Dimensions
5/8″-B-D | 5/8″-B-S fits .527 to .595 I.D. fits 5/8″ tube 18 to 25 BWG
3/4″-B-D | 3/4″-B-S fits .652 to .713 I.D. fits 3/4″ tube 18 to 25 BWG
7/8″-B-D | 7/8″-B-S fits .777 to .837 I.D. fits 7/8″ tube 18 to 25 BWG
1″-B-D | 1″-B-S fits .902 to .962 I.D.. fits 1″ tube 18 to 25 BWG
1 1/8″-B-D | 1 1/8″-B-S fits 1.027 to 1.087 I.D. fits 1 1/8″ tube 18 to 25 BWG
1 1/4″-B-D | 1 1/4″-B-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.