I-Stim-proof-proof kunye ne-Primary Stem Seal
Igxalaba lesiqu liyinxalenye yesikhondo, ligcinwa ngaphakathi ukunqanda ukuvuthuza kwesikhondo kuxinzelelo kumgodi womzimba.Isitywina esisisiseko sithintela ukuvuza kwi-atmosfera, ikwasebenza njengokuthwala kwetorque ephantsi.
Ngokuchanekileyo, iBhola egudileyo
Ubume bebhola kunye nokugqitywa komphezulu zizinto eziphambili kubomi bevalvu, amandla okubamba uxinzelelo, kunye netorque yokusebenza.