Iringi yepiston inenotshi kwaye ayikho isetyhula kwi-free state. Ubungakanani bayo bangaphandle bukhulu kunobubanzi obungaphakathi be-cylinder. Ngoko ke, emva kokuba ifakwe kwi-cylinder kunye nepiston, ivelisa amandla e-elastic kwaye ibambelele eludongeni lwe-cylinder.

Iringi yepiston icinezelwe ngokubhekiselele kumphezulu osezantsi we-groove ye-ring groove phantsi kwesenzo soxinzelelo lwegesi, ngoko ke igesi igeleza ijikeleze ngasemva kwendandatho kwaye iyanda, kwaye uxinzelelo lwayo luyehla. Kwangaxeshanye, amandla oxinzelelo lwerhasi kwiringi yangasemva enza i-piston ring ibambelele ngokusondeleyo eludongeni lwesilinda. Xa irhasi ogama uxinzelelo kuye kwehliswa ukuvuza ukusuka ring yegesi yokuqala ukuya kwinqwelomoya engasentla umsesane wegesi yesibini, umsesane irhasi icinezelwe kumphezulu osezantsi isiphelo groove ring yesibini. Ijikeleza ijikeleze ngasemva kwendandatho kwaye iphinde ikhulise, kwaye uxinzelelo lwayo luyancipha ngakumbi.

Ukuba oku kuyaqhubeka, uxinzelelo kunye nesantya sokuhamba kwerhasi evuzayo ukusuka kwiringi yokugqibela yerhasi yehliswe kakhulu, ngoko ke isixa segesi evuzayo sincinci kakhulu. Ke ngoko, isixhobo sokutywina "i-labyrinth" esenziwe ngamakhonkco erhasi ambalwa kunye nokusikeka okumangalisayo sanele ukutywina ngokufanelekileyo igesi yoxinzelelo oluphezulu kwicylinder.