The parameters (Time/Heat)that Aircrew Equipment Assys (AEA) are supposed to withstand, are laid down in various Def Stans. Ultimately, they are all designed to give the individual enough time to evacuate the ac by his primary escape means.
Boots = 600deg for 2Secs during ejection!
Fly Suit = 600 deg for 4 secs (Flash Fire with Avtur)
Puffa Jkt = 600 deg for 0 secs ( Any fire any ac!!!!!)
etc
For those that continue to fly in the old style Fly Suit (Mk 14) have a look at the Thermo Man trials and I am sure it will be a good enough argument to wear the new Mk16.
