Gift BoutiqueRedRock Threaded CO2 Cartridge Gallo Drain Gun Blaster Cleaner for A/C Condensate Lines with Drain Hose - Air Conditioner Cleaner Blaster Opener Kit

It works great My question to you is I have an extra one and only needs the red seal do you sell that separate

My a/c had been leaking for months this worked for me not being hard tightening lightly and I used 3 canisters. Handle with care is all. The sound and feel you get when you hit the trigger is almost instant :)

Red Rock unit was defective and would not accept properly sized Red Rock cartridges. Puncture pin was off-center in the gun and would not properly/safely seat the pressure cartridge. Also, Seller claims the gun will accept screw or non-screw type 16gm cartridges; I purchased non-screw type 16gm cartridges also made by Red Rock, and they do not fit; top as top shoulder and neck of the cartridges appears to prevent it from seating without excessive force applied to the handle carrier. Cannot be operated safely ... at least not the unit I received. Returned for refund.

worked well to push algae out of line so my ac would work

I have not had the chance to use this, but when I was working we used them to clean the drain lines at work. They always work very well.