Diy o-ring with glue-gun Answered
for emergencies, but not only: make your own o-ring. use a hot glue gun and some soft glue-stick. look for a round object more or less the size of the o-ring you need. form a steady bead of hot glue around it. wait for it to set. peel it off. if necessary: smoothen down the edges somehow (sanding-paper, file, etc). feedback appreciated. thank you.