Typically Asked Questions Regarding Hepco Silicone Tube Plugs

Q: What temperatures can the HEPCO plugs be used at?

A: The HEPCO Silicone Tube Plugs maintains it's flexibility from -75o F through 585o F.

Q: What is the maximum pressure range for the HEPCO Silicone Tube Plug?

A: HEPCO double silicone tube plugs are tested at 200 psi pressure and are not recommended for high pressure use. Single plugs are typically used for 60 psi and below.

Q: Can it be used in a nuclear facility for plugging heat exchangers with low level radiation?

A: The silicone expandable part is rated for 109 rads - the hytrel (washers and collars) at 107.

Q: How long will the HEPCO plug last in service?

A: The HEPCO Silicone Tube Plug has a 20 to 30 year service expectancy at 100o F to 250o F - much longer at lower temperatures.

Q: Can it only be used in cooling water applications?

A: No - it can be used for almost any heat exchanger application circulating acids, except where solvents are being used.

Q: Can the HEPCO plug be used in coated heat exchangers?

A: It is one of the only expandable plugs that is recommended for this application.

Q: Will it provide a better seal than other plugs?

A: In almost all cases, it will seal better because of it's tremendous flexible qualities. It will conform to almost any tube distortion or pitted surface area.

Q: What other benefits are there in using the HEPCO Silicone Tube Plug?

A:
It will not distort tube or tube sheets like metal plugs
It is easily installed
It will not fail due to cracking or rotting like rubber will
It can be re-used
It will not add to corrosion or galvanic problems because no metallic parts touch the inside of the tube