Nu-Calgon 405006 Easy Seal Replacement

I been in the ac business for 54 years, i have used this and only this for 6 years I tried other brands when this first came out a few years ago and I have stuck with this one for 6 or 7 years now straight for some reason this year I thought I would try the leak sealer that comes in the tube first unit I put it in at knock the compressor out immediately second unit I tried to put it in the fluid would not come out of the tube and ended up leaking all over my hand so I can honestly say I have used the can for several years and it is fixed every leak that I've tried it on and I will not use the kind in the tube anymore