Kunze kwechidimbu chepolymerization nemapoka ekupedzisira, tembiricha inokanganisawo viscosity yePDMS (mafuta esilicone ane hunhu hwekadiki kadiki kadiki-temperature coefficient, asi viscosity yayo ichiri kuderera pakupisa kwakanyanya), asi uku kushanduka kwemamiriro emuviri kwete kusiyana kweiyo viscosity inokonzerwa nemakemikari.
Iyo dhigirii yepolymerization ndiyo inonyanya kukosha chinhu chinotaridza viscosity yePDMS. Musiyano wekureba kweketani yemamorekuru inotungamira kusiyanisa kwe viscosity pakati pemhando dzakasiyana dzePDMS, nepo pesvedzero yemapoka ekupedzisira uye tembiricha iri yechipiri. Mumashandisirwo anoshanda (akadai sepasi polishes, lubricant, nezvimwewo), zviri chaizvo nekusarudza PDMS ine madhigirii akasiyana epolymerization iyo inodiwa viscosity performance inofananidzwa.