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Blue Monster Stay-Soft PTFE Thread Sealant

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Blue Monster® Stay-Soft PTFE Pipe Thread Sealant – Premium Grit-Free, Non-Drying Thread Sealant for Fire Sprinkler Systems and More

Blue Monster® Stay-Soft PTFE Pipe Thread Sealant is a premium-grade, grit-free, non-toxic, non-drying, and non-separating thread compound formulated for both commercial and residential fire sprinkler systems, as well as general plumbing applications. This professional-grade pipe thread sealant is designed to adhere to even oily threads, making it ideal for job sites and pre-fabrication projects.

Superior Thread Sealing Performance with PTFE

Enriched with PTFE (polytetrafluoroethylene), Blue Monster Stay-Soft provides exceptional thread lubrication while preventing leaks in threaded connections. Unlike conventional thread sealants that dry out or harden over time, Stay-Soft maintains its pliability for years, allowing for easy disassembly of threaded fittings—even decades after installation.

Its stay-soft formulation means you can pre-fab sprinkler system connections weeks in advance without concern for degradation or performance loss. Whether you're working on-site or on a production line, Blue Monster Stay-Soft delivers long-term reliability and effortless application.

Key Features & Benefits

  • Grit-Free & Non-Toxic – Safe for potable water systems and sensitive piping.

  • Non-Drying & Non-Separating – Stays pliable and effective over time, even in long storage or delayed system pressurization.

  • Easy Cleanup – Wipes away cleanly, reducing mess and labor.

  • Adheres to Oily Threads – Ideal for metal and pre-lubricated fittings.

  • Brushable Consistency – Applies smoothly from -15ºF (-26ºC) to +400ºF (204ºC).

  • Lead-Free – Meets modern safety standards and environmental guidelines.

  • Stay-Soft Formula – Allows future disassembly and maintenance.

Applications

Blue Monster Stay-Soft PTFE thread compound is specially formulated for fire protection systems, including:

  • Residential and commercial fire sprinkler systems

  • Pre-fabrication of sprinkler and piping assemblies

  • Potable water lines

  • Compressed air, hydraulic, and steam systems

  • Metal and plastic pipe systems, including PVC, CPVC, ABS, and nylon

Its versatility also makes it suitable for use in industrial, plumbing, HVAC, and mechanical piping systems.

Specifications

  • Temperature Range: -15°F (-26°C) to +400°F (204°C)

  • Pressure Ratings:

    • Gases: Up to 5,000 PSI (351.5 kg/cm²)

    • Liquids: Up to 10,000 PSI (703.1 kg/cm²)

  • Federal Specification: Exceeds TT-S-1732

  • Certifications:

    • FBC™ System Compatible with FlowGuard Gold®, BlazeMaster®, and Corzan® piping systems (made with TempRite® Technology)

    • Suitable for use in systems requiring chemical compatibility certification

Safety & Compliance

Blue Monster Stay-Soft is manufactured to the highest quality standards and has been tested in real-world conditions. It meets stringent safety and performance criteria for industrial-grade sealants. When used as directed, it offers leak-free, corrosion-resistant, and dependable seals.

⚠️ Note: Not recommended for use in oxygen systems. For oxygen service, use Clean-Fit’s 3-wrap Oxygen PTFE Tape or Blue Monster® OXY-Clutch Green Oxygen Tape.

For maximum performance in fire sprinkler installations and demanding pipe thread sealing jobs, choose Blue Monster® Stay-Soft PTFE Pipe Thread Sealant—the contractor’s preferred choice for long-lasting reliability and ease of use.