Where Aramid Fabric Is Used in North American Manufacturing

Where the seat construction cannot pass on foam chemistry alone, an FR barrier interliner between foam and cover does it. This is the same approach the sleeper mattress uses for 16 CFR 1633, applied to a different regulation

A sleeper mattress is a mattress under 16 CFR 1633, so it needs a fire barrier that survives a 30 minute open flame test, and 16 CFR 1632 covers cigarette ignition on top of that. The barrier is a knit or nonwoven sock of aramid, FR rayon, and fiberglass blends wrapped around the foam core, and it is what makes this part a regulated product rather than a comfort part

Woven aramid and UHMWPE laminate is the backing behind a strike face and the whole of a soft armor panel. Aramid holds the fragment, and the panel is specified by the threat it stops rather than by a mechanical property