Bucket 12g Changer face seal

thingiverse

This fits many 12g changer pierce assemblies, including CCI. It is about 50% thicker than the CCI face seal, and when printed in Prusaflex, it is softer. It starts to seal before the pierce pin punctures the 12g, so you may not get the usual hiss from the lost gas during cartridge insertion. This requires less torque on the changer threads to seal.