Gas boosters are used for the 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 an improved sealing system to make them leak-proof. The mechanical seals are fitted if application so warrants. The construction materials are special, depending upon the nature of the gas.