1.Wide range of applicable of applicable working condition,high temperature and high pressure resistance.applicable to super low temperature and vaccm condition chemical resistant gasket is available under various medium,through change of composition of gasket 2.Strong stress compensation,stable and reliable sealing performance even under frequent pressure fluction condition 3.Perfect sealing performance 4.Normal requirment of flange srface finishing which contact with gasket 5.Easy installation and low pre-tightening stress of gasket