if it was vacuum sealed, i doubt it would work because the moisture from the body will still create condensation unless you can freeze it near instantaneously by cryogenic means. if you want my opinion, clean the body to avoid bacteria buildup and put it in a bag. now before putting it in the bag you will need to buy a crapload and i mean a crapload of formaldehyde. the formaldehyde will help preserve the body. stick the bagged body in a refridgerated climate.....DONT FREEZE IT. hard saying how long that will last you, because it varies from person to person and how thorough you go about doing it, but it will keep you a cheeky fellow for a while.