H5 headlight desiccant

[jaustinmd]

I'm cleaning-up and repairing my H5 headlight assemblies, but will probably upgrade to H4's in the future. I learned on the forum about cleaning the inside of the lens/reflector with alcohol. There were several comments recommending changing the dessicant package attached to the bottom of the reflector assembly.
Anyone have a source for the dessicant package? I searched Pelican and couldn't find it.
I suspect it's most likely that the dessicant is silica gel. Has anyone ever just regenerated it by baking it dry again? I'm thinking 220F for 8 hrs ought to do the trick, but don't know if the plastic cartridge can sustain that much heat?
John