Gas boosters are used for circulation of gases for chemical processes. The gases handled are Hydrogen, Nitrogen, Oxygen, Biogas, Carbon-Di-Oxide, Methane, Mixed Gas, BF Gas, Coke Oven Gas etc. The boosters are fitted with improved sealing system to make it leak-proof. The mechanical seals are fitted, if application so warrants. The construction materials are special, depending upon the nature of gas.