Silicone raw pa'u o le mea fa'amalosia o pa'u fa'afefiloi. O mea totino o le pa'u fa'afefiloi e faia mai ituaiga pa'u mata eseese e eseese
tele lava. O manaoga mo pa'u mata e eseese i ituaiga eseese o pa'u fa'afefiloi.O mea taua o le paʻu mata e faʻatatau i faʻailoga e tolu: molar mass, vinyl content ma volatile matter.
I le taimi o le gaioiga, o le paʻu mata ma le mamafa mole mole eseese ma mea e aofia ai vinyl e masani ona faʻaaogaina faʻatasi i se vaega patino. O le maualuga o le maaa o le oloa, o le maualuga o le vinyl content o le paʻu mata e manaʻomia. Ole mea fe'avea'i e masani ona mana'omia e feololo (1% i le 2%). Afai e maualuga tele le mea fa'afefete, o le a pipii le pa'u ma fa'aitiitia lona fa'atinoga, ae afai e maualalo tele le mea fa'afefete, o le a faigata i le pa'u pa'u ona "su'e le pauta".
Generally speaking, the higher the molar mass, the better the physical and mechanical properties of the vulcanized rubber, but its processability and fluidity will decline, and the speed of "powder intake" (filler mixing into raw rubber) will slow down. When processing molded compound rubber, raw rubber with a high molar mass (>600,000) e masani ona filifilia. Ae peitai, pe a faia oloa extruded, e faaleleia extrusion fluidity, o le molar mass e tatau ona laititi ifo. O le tele o le vinyl content e iai sona aafiaga tele i le fa'atinoga atoatoa o le pa'u fefiloi. O le faʻatinoga ma le fetuutuunai o le paʻu faʻapipiʻi faʻatasi ma le vinyl content o le 0.1% i le 0.2% e sili ona lelei.