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Blue pipe thread sealant in an 8 fl oz brush-top can

Hercules

Hercules 15806 Megaloc Pipe Thread Sealant Blue 8 fl oz

SKU CH-PCQG-045A1

Non-hardening blue paste seals air, fuel, gas, steam and potable water lines up to 2,600 psi gas and 12,000 psi liquid from -50 °F to 400 °F

  • Non-hardening sealant stays flexible for reliable joints
  • Withstands -50 °F to 400 °F across extreme conditions
  • Seals air, fuel, water, gas and steam lines
  • Brush-top can applies paste cleanly without extra tools
  • Rated 2,600 psi gas and 12,000 psi liquid pressure

Pipe Thread Sealant for Multiple Fluids

Hercules 15806 Megaloc is a non-hardening paste designed to seal threaded pipe connections carrying air, butane, diesel, fuels, kerosene, petroleum, natural gas, potable water, propane, steam and water. It suits plumbers, HVAC technicians and maintenance crews who need a single compound for diverse residential and industrial piping systems.

Brush-Top Can Simplifies Application

The 8 fl oz brush-top container lets technicians coat threads directly without separate tools or messy transfer. Non-hardening cure means joints stay adjustable during assembly and can be disassembled later for maintenance, reducing downtime on service calls.

Temperature and Pressure Range Supports Demanding

Rated from -50 to 400 degrees F, the sealant withstands freezing outdoor lines and high-temperature steam service. It handles gaseous pressures up to 2,600 psi and liquid pressures up to 12,000 psi, covering most commercial pipe schedules without requiring anaerobic or PTFE alternatives.

How it compares

Measured against everything we stock in Caulking & Sealing Supplies, at today’s prices. Recalculated every night.

Price $10.99
Cheaper than about 70% of the 631 comparable items (median $16.99).

Specifications

Product
Brand nameHERCULES

Questions about this item

Does the non-hardening Megaloc paste ever need to be scraped out and reapplied after years of service?

The sealant stays non-hardening, so it does not dry out or shrink; it can be re-tightened or re-sealed without full removal unless the joint itself is disturbed.

At 600 psi gas pressure, will the brush-top can's formula reach its limit before the pipe threads do?

The sealant is rated for 600 psi gas and 12,000 psi liquid service, so the pipe or fitting will typically reach its mechanical limit first.

Will the blue paste degrade or off-gas if the line runs at 400 °F all day?

Maximum operating temperature is 400 °F and minimum is -50 °F; within that range the non-hardening paste remains stable with no curing or breakdown.

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