Hercules 15-806 Megaloc Thread Sealant – 1/2 Pint

The Hercules 15-806 Megaloc Thread Sealant is a high-performance, non-hardening compound designed for sealing threaded connections in both metallic and plastic piping systems. Reinforced with DuPont™ Kevlar® fibers, Megaloc provides mechanical strength and long-term stability under temperature, pressure, and vibration. It is formulated for professional-grade applications requiring immediate pressure testing and reliable joint integrity across a wide service range. The compound maintains flexibility, resists separation, and allows disassembly without thread damage even after extended service.

Details

• Manufacturer: Hercules (Oatey Company)
• Model Number: 15-806
• Product Name: Megaloc Thread Sealant
• Product Type: High-performance pipe joint compound
• Container Type: Metal can with brush-in-cap applicator
• Container Size: 1/2 pint (237 mL)
• Physical Form: Liquid paste
• Color: Blue
• Odor: Odorless
• Composition:
  • Petroleum-Based Lubricating Oil
  • Kaolin
  • Talc
  • Magnesium Carbonate
  • Poly(p-phenylenediamine terephthalamide) (Kevlar® Fiber)
  • Titanium Dioxide
  • Amorphous Fumed Silica
• Service Temperature Range: -50°F to 400°F (-46°C to 204°C)
• Application Temperature Minimum: -25°F (-32°C)
• Flash Point: 212°F (100°C)
• Viscosity: 30,000 cP
• VOC Content: 4 g/L
• Flammability Rating: 1 (low)
• Pressure Ratings:
  • Hydraulic Pressure: up to 12,000 PSI
  • Gas Pressure: up to 2,600 PSI
• Applicable Materials: Aluminum, Black Iron, Brass, Copper, Galvanized Steel, Stainless Steel, Monel, Glass, Fiberglass, PVC, CPVC, ABS, Polyethylene, and Nylon Plastic
• Curing Properties: Non-hardening and non-separating; remains pliable after installation
• Corrosion Resistance: Provides thread protection and oxidation prevention
• Toxicity: Non-toxic, non-hazardous, non-flammable
• Environmental Compliance: Contains no lead, heavy metals, or volatile solvents

Technical Application

Hercules Megaloc is formulated for use in high-pressure hydraulic and pneumatic systems, water and gas lines, and general industrial piping networks. The Kevlar® fiber reinforcement enhances tensile strength and prevents extrusion under system pressure. The compound seals effectively on both plastic and metallic threads, providing resistance to temperature cycling and vibration. Megaloc remains non-hardening, ensuring future disassembly without thread galling or seal degradation. The material can be applied with a natural bristle brush at ambient or subfreezing temperatures down to -25°F and provides immediate pressure test capability upon installation. It is compatible with a wide range of materials used in commercial and industrial fluid systems, including stainless steel, brass, PVC, and ABS.

Specifications

• Type: Non-hardening, fiber-reinforced thread sealant
• Base Material: Petroleum oil blend with mineral fillers and Kevlar® reinforcement
• Color: Blue
• Viscosity: 30,000 centipoise
• Flash Point: 212°F (100°C)
• VOC Level: 4 g/L
• Service Temperature Range: -50°F to 400°F
• Hydraulic Rating: 12,000 PSI
• Gas Rating: 2,600 PSI
• Application Range: Metals and plastics, including steel, copper, brass, PVC, CPVC, and ABS
• Application Temperature: Down to -25°F
• Cleanup: Wipes clean from tools and hands with a dry rag; solvent not required
• Corrosion Protection: Inhibits rust and thread oxidation
• Hazard Classification: Non-flammable, non-hazardous, ORM-D Consumer Commodity (transport classification)

Summary

The Hercules 15-806 Megaloc Thread Sealant provides a Kevlar®-reinforced, non-hardening sealing compound for professional piping systems in industrial, plumbing, and mechanical installations. It delivers immediate, leak-resistant sealing across a broad temperature and pressure range and remains pliable for later disassembly without thread damage. Megaloc is chemically stable, non-toxic, and compliant with low-VOC and non-flammable requirements, making it suitable for professional use in both metallic and plastic thread sealing applications.