Letter Re: Advice on Firearms Caching
James, In “Letter Re: Advice on Firearms Caching”, Mark J. wrote “Should I simply use a Hot Hands hand warmer inside the mylar bag and then another one inside the PVC tube? I should not have to worry about moisture if it is vacuum sealed? right? “ Well, no–regardless of the chemicals in the heater. Putting any temporary heat source in a sealed container may actually cause corrosion or water damage that wouldn’t have happened before. This is why: Heating air does not remove moisture from a confined environment; it simply increases the air’s ability to absorb moisture from other …