Heerkulka sare{0} caag silikoon ah oo vulcanized ah, oo loo soo gaabiyo HTV, ayaa sidoo kale loo yaqaan kulaylka{1} polymer keedu waa mid sare -molecular{4}}miisaanka polysiloxane toosan (badanaa polydimethylsiloxane), oo leh miisaan kelli ah oo u dhexeeya 400,000 ilaa 800,000.
Xaaladeeda caagga ceyriinka ah, waxay badanaa u muuqataa sida midab cad oo hufan-
Vulcanization (daawaynta) waa in lagu fuliyaa heerkul aad u sarreeya (sida caadiga ah inta u dhaxaysa 110 digrii iyo 180 digrii, ama xitaa ka sarreeya), oo u baahan codsiga cadaadiska iyo wakhti gaar ah oo vulcanization ah (oo u dhexeeya dhowr daqiiqo ilaa tobanaan daqiiqo). Habkan waxaa badanaa lagu fuliyaa qalabka sida samaynta, extrusion iyo calending.