24 Pack - Fuel, Compressed, Trioxane Ration Heating, .6 Oz Size Bar 24 Trioxane Fuel Bars. NSN# 9110-00-889-3553. Mil-F-10805D. Individually foil-wrapped bars are sealed for long shelf life. Bars are good until opened and exposed to air. Each package inspected before shipping. 1982 US Military Surplus.