Operating Limits: Medium: petroleum, chemical, liquefied petroleum gas, weak acid, alkali, salt and medium which contain a little particle. Operating Limits: Medium: various salt solution, melting urea, phosphate slurry, sugar solution, staining solution, slurry, liquid medicine particle media; paper pulp, fiber slurry medium . YTB132 Metal Bellow Mechanical Seal Operating Limits: Medium: middle and high viscosity medium, and allow the medium containing more solid particles, at s 150 "C, alkali, salt and other parts can be used in chemical industry, chemical fiber industry corrosive medium. Operating Limits: temperature exceeds 180 °C, cooling water tank Medium: oil, water, weak alkali, weak acid and flammable, explosive, toxic gas. Operating Limits Medium: N2, air, N3 and other gas (when the gas is flammable, explosive, toxic and other harmful gas, the seal cavity shall be filled with inert gas