Imathiriyeli ekrwada ye-silicon core tube substrate yi-polyethylene yoxinaniso oluphezulu, umaleko wangaphakathi usebenzisa eyona friction coefficient i-silica gel solid lubricant. Kukuxhathisa umhlwa, udonga lwangaphakathi olugudileyo, igesi efanelekileyo yokuhambisa intambo yokuvuthela, kunye neendleko eziphantsi zokwakha. Ngokweemfuno, ubukhulu obuhlukeneyo kunye nemibala yeetyhubhu ezincinci zigxininiswe yi-casing yangaphandle. Iimveliso zisetyenziselwa inkqubo yothungelwano lwentambo yonxibelelwano kuhola wendlela, uloliwe njalo njalo.