Shaqada birta birta ee qulqulaya runtii waa in lagu xidho dhamaadka tuubbada dhamaadka tuubbada. Waxaa ku yaal isha indhaha jilicsan, iyo boodh bir ah oo bir ah oo bir bir ah ka dhigaya labada qaybood ee si adag loo isbarbar dhigo. Markii ay isku xirayaan, gaskets-ka, gaskoolka ptfe, gaskoonada birta, gaskoonada birta, gaskoolada silicon, iwm.