SV 121 nikintu kimwe kigizwe na kashe ishingiye kuri silane yahinduwe na polyether resin nkibice byingenzi, kandi ni impumuro nziza, idafite umusemburo, idafite isocyanate, na PVC idafite.Ifite ubwiza bwibintu byinshi, Kandi nta primer ikenewe, nayo ikwiranye nubuso busize irangi.Iki gicuruzwa cyagaragaye ko gifite imbaraga za ultraviolet zirwanya, bityo ntigishobora gukoreshwa mu nzu gusa ahubwo no hanze.