how can I get a good seal on a pvc air gun?
so I have been making pvc air guns and i have encountered a problem with my newest air gun. the seal between the pvc end cap and bike valve(witch is cut from bike inner tube and then hot glued in) is not the best seal. is there a way to get a guaranteed seal, with out breaking the bank. also best answer will receive one million..........pretzels. thanks for reading, and please post your advice.