Sealing screws, tseem hu ua self-sealing screws los yog sealing fasteners, yog tshwj xeeb ntsia hlau Cheebtsam tsim los muab ib tug ruaj ntseg thiab leak-proof foob nyob rau hauv ntau yam kev lag luam thiab mechanical daim ntaub ntawv. Cov ntsia hlau no muaj cov qauv tsim tshwj xeeb uas suav nrog cov khoom sib khi, feem ntau yog ib qho O-ring lossis ntxhua khaub ncaws, uas tau muab tso rau hauv cov qauv ntawm cov ntsia hlau. Thaum lub sealing ntsia hlau yog fastened rau hauv qhov chaw, lub sealing ntsiab tsim ib tug nruj sealing ntawm lub ntsia hlau thiab mating nto, tiv thaiv kom tsis txhob muaj cov kua, gases, los yog cov kab mob.