Lub gasket tsim los ntawm peb lub tuam txhab muaj cov yam ntxwv hauv qab no: lub gasket tsis yog tshuaj lom; Nws tau txais cov txheej txheem uas tsis yog adhesive ua kom tiav rau PTFE membrane thiab silica gel ua ke. Cov inert, tiv taus cov kua qaub, alkali, ntsuas kub, thiab adhesion. Nyob rau tib lub sijhawm, cov elicticity ntawm cov roj hmab silicone roj hmab lossis silica gel txheej yuav siv tau los xyuas kom meej qhov kev sib khi ua haujlwm.