Silikon fom bod i save stap long tri kaen we i stanap long densiti blong foming:
01Low-i densiti foming: densiti 0.1-0.5g/cm³, lait na sof, ol i yusim long kusoning pakejing bilong ol ilektronik divais .
02 Medium-}densiti foming: densiti 0.5-0.8g/cm3, bikpela strong bilong masin, i gutpela long wokim ol samting bilong insulesen bilong wokim ol krai, ol samting bilong kisim sok bilong ol otomotiv sek, na ol narapela samting. Yudaoplesholda0.
03 Hai-lidensiti foming: Densiti 0.8-1.2g/cm3, gutpela wear resistens, i gutpela long ol mekanik sil na ol indastriel paip gasket.