The H41 Interceptor™ Hood is made with a layer of DuPont™ Nomex® Nano Flex inside that acts as a filter to reduce firefighters’ exposure to persistent fireground carcinogens and other contaminants. We’ve used this revolutionary material sewn between two layers of knit 6.0oz PBI®/Lenzing (20%/80%) to provide the maximum performance for particle barrier filtration, comfort, and thermal & flashover protection.
PROPERTIES & BENEFITS
- Particulate Barrier with Submicron Pores
- Comfortable, Thin, & Lightweight
- Very Breathable – High Air Permeability
- Provides Additional Thermal Insulation
- Laundry Durable
The H41 Interceptor™ blocks 95% of particulates at .2 micron in size or larger. For perspective, there are 25,400 microns in one inch and a human hair is about 75-100 microns wide, so a .2 micron particulate is about 500x smaller than a strand of hair. Testing has shown that the particulates sized at less than .2 microns don’t have enough mass to make it through the double layer knit and the Nomex® Nano Flex; essentially meaning that this hood blocks 100% of particulates less than .2 microns.
Nomex® Nano Flex is a revolutionary new material that can block fine particulates almost as well as an impermeable membrane. Unlike FR moisture barrier membranes however, this new lightweight (0.5oz/yd2), “barely-there” material is actually completely breathable; Nomex® Nano Flex is a non-woven, web technology, made of submicron continuous fibers.
This data demonstrates how very thin, light, and breathable this material is, while still being able to effectively filter particles.
The Improved Barrier Efficiency data set demonstrates the remarkable difference in particulate blockage from a standard FR Knit Hood to an FR Knit Hood with Nomex® Nano Flex (measuring from 0.5-0.2 microns).
Additionally, adding Nomex® Nano Flex inside the hood’s 2 layers gives the hood nearly a 25% boost in TPP, despite being a mere 0.5 oz/yd2. (Improved Thermal Protection by 15%)