Moisture Barrier | Stedfast
Stedair® 4000 is a premium structural firefighting moisture barrier engineered to balance protection, breathability, and durability. Its enhanced bi-component membrane is laminated to a woven aramid substrate, providing dependable liquid penetration resistance while supporting heat-loss performance and long-term durability in demanding fireground environments.
Stedair® 4000 combines a woven aramid substrate with enhanced bi-component membrane technology to provide a balance of thermal performance, breathability, liquid protection, and durability.
Engineered to provide a strong balance of thermal protection and total heat loss within complete structural firefighting protective composites.
The moisture-barrier construction supports heat and moisture-vapor transfer to help balance protection with firefighter comfort.
Provides protection against blood-borne pathogens and challenge liquids including battery acid, hydraulic fluid, Fuel C, AFFF, and chlorinated water.
Stedair® 4000 is backed by Stedfast's five-year limited moisture-barrier warranty, subject to the manufacturer's warranty terms and requirements.
| Material Type | Structural firefighting moisture barrier |
|---|---|
| Material | Stedair® 4000 |
| Weight | 5.0 oz/yd² |
| Barrier | Bi-component PTFE/PU film |
| Substrate | 93% meta-aramid / 5% para-aramid / 2% antistat woven fabric |
| Construction | Bi-component barrier film laminated to woven aramid substrate |
| Finish | Non-fluorinated durable water-repellent finish |
| Chemical Protection | Blood-borne pathogens, battery acid, mineral-based hydraulic fluid, Fuel C, AFFF, and chlorinated water |
| Total Fluorine Test | No |
Manufacturer: Stedfast
Ricochet Listed Weight: 5.0 oz/yd²
Barrier: Bi-component PTFE/PU film
Substrate: 93% meta-aramid / 5% para-aramid / 2% antistat woven fabric
Key Performance: Breathability, thermal performance, liquid and chemical protection, abrasion resistance, and long-term durability
Stedair® 4000 is available as a moisture-barrier option across multiple Ricochet structural firefighting configurations.
Stedair® 4000 is available among the moisture barrier selections offered with Ricochet's configurable M² Custom™ structural firefighting gear.
Stedair® 4000 is available as a moisture-barrier option in Ricochet's M² Prime™ structural firefighting package.
Stedair® 4000 is also available as a moisture-barrier option in Ricochet's M² Response™ structural firefighting gear.