The main component of palm shell charcoal are fixed carbon 82,60%; ash 3,31%, water 1,20% and volatile substance 12,89%. High carbon content make palm shell charcoal can be used as a filler on making gas cylinder seal. Gas cylinder seal is a rubber seal used in gas cylinder as a connector between LPG and stove. The research aim to make a gas cylinder with palm shell charcoal and carbon black as…