Airgun CO2 seal caps (fixes most leaks)

TPU seals to stop leaking airguns. Goes over the top of 12g CO2 cartridges and create a new seal. My seals on my bb gun failed, as most airgun seals do at some point. I tried multiple things before coming across these caps you put over the top of a cartridge to make a new seal over a old indented one. I designed my own and printed them out of TPU. I tried them and went from losing entire cartridges in seconds to barely hearing a noise when putting a cartridge in. These should fix most leaks except for the ones further inside the gun. Print out of TPU and NO BUILD PLATE ADHESION or you will be picking bits of filament off of them for a while. Hope they work for you too.