A premium tri-component moisture barrier that provides outstanding protection for those in the fire service industry, Stedair® 4000 combines woven 3.2 oz/yd2 DuPont™ Nomex® pajama check substrate with an enhanced bi-component membrane. This bi-component membrane is comprised of expanded PTFE (Teflon) matrix that has continuous hydrophilic (water-loving) and oilophobic (oil-hating) polymer coatings impregnated into the fabric.

Key benefits of Stedair® 4000:

• Exhibits passing results after 10 wash/dry cycles at 140° F
• Remains waterproof to a minimum of 1 PSI after exposure to -140°F
• Attains a hydrostatic resistance of no less than 150 pounds per square inch
• The best combined THL and TPP in the industry

What is BI-COMPONENT TECHNOLOGY?
Bi-component technology combines an expanded microporous PTFE (Teflon®) matrix and with monolithic technologies in a way that provides the greatest performance benefits possible. The microporous matrix contains small passages for flow of both air and moisture vapor while monolithic technology allow transmission of vapor by molecular diffusion through the polymer as a result of its hydrophilic (water-loving) nature.

DID YOU KNOW? 

• All moisture barriers manufactured today have FR polyurethane in them
• Stedfast has its own formulated patented polyurethane
• PU provides the protection from chemicals (NFPA 1971) from:
  AFFF foam, battery acid, hydraulic fluid, gasoline, and chlorine
• PU also provides VIRAL protection from blood-borne pathogens