<P> Dry ice is also useful for the de-gassing of flammable vapours from storage tanks--the sublimation of dry ice pellets inside an emptied and vented tank causes an outrush of CO that carries with it the flammable vapours . </P> <P> The removal and fitting of cylinder liners in large engines requires the use of dry ice to chill and thus shrink the liner so that it freely slides into the engine block . When the liner then warms up, it expands, and the resulting interference fit holds it tightly in place . Similar procedures may be used in fabricating mechanical assemblies with a high resultant strength, replacing the need for pins, keys or welds . </P> <P> Dry - ice blasting, a form of carbon dioxide cleaning, is used in a number of industrial applications . </P> <P> It is also useful as a cutting fluid . </P>

Water. carbon. dry ice (frozen carbon dioxide). blood