2BLOK™ makes a 100% air tight seal on caulking tubes and foam can
applicator straws. I don't
know of ANY other product that can stop a can of Great Stuff™ from
hardening in the straw, but mine does! This product is
totally unique and comes in packs of 2 which can be used
multiple times. I have
tubes that are over 2 years old in my basement that are still as fresh as the
day I opened them.There is no clean up at all as with
the other products that are on the market.
JUST REMEMBER THIS!
A soft polymer ball when applied to the tip of a caulking tube or applicator straw as directed will stop all air infiltration, thus stopping the curing process. No clean up. Can be re used many times. Saves time, money and wasted trips to the hardware store. Patent pending