Navigating These Challenging Times Together

First, we want to thank you again for your continued support during this difficult time. Like everyone else we are just trying to take things one day at a time and get through this the best we can. We'd like to share some information with you to help you stay updated with what's going on at Hatchet Hardware in the coming days.

Store Hours:
As an essential business, our shops will continue to stay open. Our teams are working incredibly hard to be here for our communities in any way that we can so please be courteous. You can find our current store hours on the locations page:
Feel free to call the shops ahead to make sure we have whatever you need before coming out and please remember that you can shop online at at any time.

Steps We're Taking:
Our offices are all currently set up to work from home to help stop the spread of COVID-19. At our warehouse and shops, we have increased efforts to disinfect high-touch and high-trafficked areas throughout the day and increased daily cleaning routines. We are also making sure all employees have up-to-date information on how to stay healthy and what preventative measures should be taken and the ability to stay home if they are feeling unwell.

You may experience delays in shipping as we are taking the necessary precautions to protect you and our team. We are still working hard to get in-stock items shipped within 24 hours. Few items may temporarily have longer fulfillment times.

Customer Service:
Our customer service team is working hard to help all customers as quickly as possible. Due to technical difficulties and a higher volume of calls you may experience interruptions. In the event this occurs, please email us at or message our chat here on the site. We apologize for any inconvenience and thank for your continued support and understanding.

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Hercules 15806 Megaloc Multi-Purpose Thread Sealant, 8 Oz, Blue

Regular price $17.99

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Multi-purpose thread sealant for use on metals including steel, stainless steel, brass, copper, aluminum, and on plastics including PVC, CPVC and ABS. Leak-free joints can be tested and put into service at once. Megaloc wipes clean from hands and tools with a dry rag, is odor-free, grit-free, and will not separate or settle. Megaloc does not harden, crack or become brittle; joints can be disassembled without damage to pipe, fittings, or threads years after the joint was made.

Megaloc is applied easily with a natural bristle brush even at temperatures as low as -25°F, and performs over a temperature range of -50°F to +400°F. It provides leak-proof hydraulic resistance to 12,000 psi and withstands gas pressure up to 2,600 psi. Megaloc is non-toxic, non-hazardous, and non-flammable. It contains no lead, heavy metals, or volatile solvents.


  • Size: 8 Oz.
  • Wipes easily from hands and tools with dry rag.
  • No waiting - Non Flammable.
  • Lead-free.
  • Blue, grit-free, high performance thread sealant for use on all plastic and metal pipe and fittings.
  • Leak proof hydraulic resistance to 12,000 PSI and withstands gas pressure to 2600 PSI.
  • Performs over a temperature range of -50° to +400°F.
  • Never hardens, cracks or becomes brittle.
  • No odor.
  • Non-separating and non-hazardous.
  • For use with all metals including galvanized steel, black iron, aluminum, copper, stainless steel and on plastics of PVC, CPVC and ABS.
  • Certified to ANSI/NSF standard 61, safe for drinking water lines.

Megaloc can be used on these materials: Aluminum, black iron, brass, copper, glass, monel, fiberglass (reinforced), polyethylene, nylon plastic, PVC, CPVC, ABS, stainless steel, galvanized steel, and many others.

Megaloc can be used on lines carrying: Acids (dilute), air (compressed gaseous), brine, butane gas, carbon dioxide, castor oils, caustic alkalis (dilute), cutting oils, diesel fuel oil, ethylene glycol, fatty acid (liquid), freons (all), gasoline, glycerine, heating oils, helium (gaseous), hydraulic oils, hydrogen, inert gases, jet fuel, kerosene, liquefied petroleum gases, lubricating oils, mineral oils, natural gas, nitrogen (gaseous), petroleum solvents, potable water, propane, propylene glycol, soap (liquid), steam lines, vegetable oils, water (cold & hot) and many other uses.

Physical Properties:

  • Pressure Rating: Liquids (12,000 psi), Gases (2,600 psi)
  • Temperature Performance: -50°F to 400°F
  • Brushability: -25°F
WARNING: Cancer -


3.0 lb