Heat Wrap ?

[FDDandata]

thanx, yall really went in on this ? more than i expected. Im just a little lost on one answer. I still didnt read thru all the reference material but im guessing low thermal conductivity material is good, and if high or low density is good or not, or if it matters, and not sure what "cp" stands for or what the R rating is. Im guessing level of insulation.

To add to that, does thermal expansion play a factor in wrapping or coating. How im thinkin, if you wrap or coat a pipe when the pipe expands from heat i would think either the wrap would stretch a little since it wouldnt expand as much as the pipe on its own(or if coated the ceramic coating would spread & crack) and when the pipe cools the wrap wouldnt be as tight as initially wrapped. I would think something like that would happen but i guess it doesnt, unless the wrap keeps expansion in line or theres a way its compensated for. Dont know if im headin in the right direction with that but the thaught popped up

and again thanx for all your answers I appreciate the time you put into them