I've used quite a bit of this product over a number of years.  I generally consider this a permanent product.  There are some solvents out there that can help to loosen it, but my experience would rate this as permanent.  Does not like some plastics so be sure to check compatibility prior to use. The product is not a "caulking", it is an adhesive sealant.  It will dry to a dull finish and not white & shiny like silicone tub caulking.  It is fairly think and can get everywhere if not careful.  One minute you touch it with your finger to make a nice bead & the next minute you find it on your shirt, pants, door knob to the house & kitchen faucet ... two weeks later you find it in your ear (ok, a little exaggeration but......).  Clean up any "messes" fast!  If memory serves me right, it takes something like 7 days for full cure.  Be sure you understand this.  Things may come in contact with it during this time & forever become part of the "bond".  Need it to cure faster?  Try the 5200FC (fast cure - red tube).  Need it to come apart easier later?  Try the 4200.