Ngaphandle kwezinga le-polymerization kanye namaqembu okugcina, izinga lokushisa liphinde lithinte ngokuphawulekayo i-viscosity ye-PDMS (uwoyela we-silicone unesici se-viscosity encane-yezinga lokushisa, kodwa i-viscosity yawo isalokhu yehla kumazinga okushisa aphezulu), kodwa lokhu ukuguquka kwesimo somzimba kunomehluko wemvelo we-viscosity obangelwa ukwakheka kwamakhemikhali.
Izinga le-polymerization liyisici esibaluleke kakhulu esinquma i-viscosity ye-PDMS. Umehluko wobude bochungechunge lwamangqamuzana uholela ngokuqondile ekuhlukeni kwe-viscosity phakathi kwezinhlobo ezahlukene ze-PDMS, kuyilapho umthelela wamaqembu wokugcina kanye nezinga lokushisa lisezingeni lesibili. Ezisetshenziswa ezingokoqobo (ezifana nokupholisha phansi, okothambisa, njll.), kungokuthile ngokukhetha i-PDMS enamazinga ahlukene e-polymerization lapho ukusebenza kwe-viscosity edingekayo kufaniswe.