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< Thread Sealant Paste

Hercules® Brush-on Block™

Hercules

Hercules® Brush-on Block™ is an all-purpose, high-performance pipe joint and gasket sealing compound. Recomended for use on metals including aluminum, black iron, brass, copper, stainless steel, galvanized steel and plastics, including PVC and CPVC. Behold the power of Hercules®, products built to last and trusted by plumbers to withstand even the toughest conditions.




Available in 4 variations

Key Features & Benefits

  • An all-purpose, high-performance pipe joint and gasket sealing compound
  • Quickly Provides leak-proof resistance to high-pressure, temperature, expansion, contraction and extreme vibration
  • Forms a tough, flexible and leak-resistant seal
  • Use for joints, threads, valves, flanges, gaskets, pumps and tanks
  • Performs over a range of -90 through 450 degrees Fahrenheit on steel pipe
  • Can be used with hydraulic pressure up to 12,000 psi and gas pressure up to 2,600 psi

Specifications

Color: Blue
Brand: Hercules
Maximum Application Temperature °F: 110°F
Maximum Application Temperature °C: 43°C
Product Type: Hard Set
Set Type: Hard Set
Material Compatibility: ABS
Material Compatibility: Aluminum
Material Compatibility: Brass
Material Compatibility: CPVC
Material Compatibility: Copper
Material Compatibility: Plastics
Material Compatibility: PVC
Material Compatibility: Stainless Steel
California VOC Compliant: No

More Specifications

Technical Resources (6)

  • Submittal
  • SDS
  • SDS Spanish
  • FAQ
  • LEED Green Sheet
  • Product Instructions

More Downloads

Available in 4 variations

Frequently Asked Questions

What pipe joint compounds should I use in an approved piping system filled with natural gas?

The following Oatey pipe joint compound products are approved for use in this application: Oatey Great Blue, Hercules Block, Hercules Grrip, Hercules Megaloc, Hercules Pipe Joint Compound, Hercules Pro Dope or Hercules Real-Tuff are all safe for this application. 

What is the curing time for pipe joint compound?

Under normal pressures the pipe joint compounds does not need a curing time. If the pressure in the lines is 125psi or higher, the recommended cure time is 4 hours before initiating pressure. Call Oatey Customer Service when in doubt.

Can pipe joint compound and thread sealant tape be used on the same joint?

Yes. Once the male threads are wrapped properly you can apply a coating of pipe joint compound over the thread sealant tape before assembling the joint. Remember that you only apply pipe joint compound to the male threads.  

Related Resources

Blog

How to Select and Apply a Pipe Thread Sealant

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Videos

Hercules Megaloc Thread Sealant

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