Originally Posted by mitiempo
You will find that after opening it usually hardens in the cartridge after a short while, no matter how you seal it.
At about $6.00 per tube, that's fine. I recall 3M 101 being fairly expensive, I think > $20 per tube and that made me not want to use it. I'll still try to organize my work so the sealant projects are all done together, but for this price I'm much less concerned.