Boosters are used for circulation of gases for chemical proocess. The gases handled are Hydrogen, Nitrogen, oxygen, Biogas, Carbon-Di- Oxide, Methance, 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.