3M 101 sealant
is no longer marketed. LifeCaulk, another polysulfide sealant
, is still available. It's been my choice for caulk/sealant forever.
Anti seize shouldn't cause any problems and might make it easier to remove in the future. If you are looking for a seal, would go with LifeCaulk or some other sealant to keep the water
out, however. That will still keep the parts
welding together and insure a water
tight seal. It will make future removal
a bit more difficult as you'll have to overcome the resistance of the caulk in turning off the parts