Skip to main content


The choice epoxy for temperatures up to 500° F.
Watch Video

PC-Fahrenheit™ Putty Epoxy is the choice for temperatures up to 500° F. It is supplied as a premeasured stick that you mix with fingers. Fast curing (60 min). Best for steam heat applications. A toolbox must. Great on copper and iron.

Here are just a few specific uses (there are hundreds of other uses):

  • Seal cracked steam or hot water radiator
  • Stop leaking steam fittings
  • Fill hole in heat exchanger
  • Attach thermocouple to hot surface
  • Seal chimney ductwork


PC-Fahrenheit™ | 1 oz.


PC-Fahrenheit™ | 2 oz.

PC-Fahrenheit Muffler Repair

Muffler Repair (PC-Fahrenheit™)

May 11, 2017

1 oz.: 2.5 cubic inches
2 oz.: 5 cubic inches

How to prepare a surface for bonding with PC-Fahrenheit™

Remove contaminants such as dust, dirt, oil and grime with a solvent such as denatured alcohol (ethanol), acetone, rubbing alcohol (isopropyl alcohol) or lacquer thinner. Mild detergent solution in water is also good removing contaminants. Use a clean paper towel or rag for wiping. Remove rust and loose paint with sandpaper or wire brush. Epoxy typically sticks to most paints. If there is a concern of the paint’s adhesion then remove it with sandpaper, wire brush or paint stripper. Smooth, glossy and shiny surfaces should be roughened using sandpaper to increase adhesion. Adhesion to wet or damp surfaces can be improved by wiping with alcohol. Do not use mineral spirits or paint thinner for removing contaminants.

How to clean-up after PC-Fahrenheit™ application

We recommend wearing disposable gloves when mixing and applying epoxy putty. Remove from skin with soap and warm water. Clean up mixed epoxy before it cures with paper towels and solvent. Denatured alcohol (ethanol), acetone, rubbing alcohol (isopropyl alcohol) or lacquer thinner are suitable solvents for removing uncured epoxy. Cured epoxy can be physically removed by prying off with a screw driver or pliers. It can also be removed with paint stripper or remover.

PC-Fahrenheit™ SDS Sheet


PC-Fahrenheit™ Front Data Sheet


PC-Fahrenheit™ Back Data Sheet


PC-Fahrenheit™ Canada SDS (English)


PC-Fahrenheit™ Canada Fiche signalétique (en français)


PC-Fahrenheit™ Hoja de Datos de
Seguridad (en Espanol)


PC-Fahrenheit™ VOC

 In Store >>
 Online >>

Can PC-Fahrenheit™ repair leaking steam radiator?

PC-Fahrenheit™ resists higher temperatures and is suitable for repairing steam pipes and radiators.

Can PC-Fahrenheit™ be used in a fireplace or wood burning stove?

PC-Fahrenheit™ will withstand temperatures up to 500°F. A fireplace or wood burning stove creates temperatures exceeding 500°F.

Can PC-Fahrenheit™ be used to seal heater chimney duct?

PC-Fahrenheit™ is excellent for use on sheet metal and the temperature is within acceptable range.

Can PC-Fahrenheit™ seal a rust hole in barbecue grill?

PC-Fahrenheit™ can be used on the barbecue grill exterior but is not recommended for the interior.

How long should PC-Fahrenheit™ be mixed before applying?

Mix PC-Fahrenheit™ for 45 to 60 seconds then immediately apply.

What is the temperature limit?

PC-Fahrenheit is not intended to exceed 500°F.

Will PC-Fahrenheit™ burn?

PC-Fahrenheit™ is not flame resistant and may burn if exposed to direct flame.

Does PC-Fahrenheit™ stick to car radiator?

Car radiators are made of various metals and plastic composites. Test for adhesion and test for leaks.

PC-Fahrenheit™ was used to plug an exhaust leak near the catalytic converter and now it has a bad odor

Engine exhaust is very hot, especially at the catalytic converter where the temperature can exceed 500°F. The smell may diminish eventually or you can remove the cured epoxy and replace the leaking converter.