Silquest A-1160 Silane Gamma-ureidopropyltrialkoxysilane 116912-64-2 Crompton-OSI Specialties Crosslinking / Coupling / Curing Agents >> Silane ADHESIVE SEALANT Silquest® A-1160 Silane gamma-Ureidopropyltrialkoxysilane (50% in methanol) OSi Specialties Silquest® A-1160 silane is an ureido silane used as a coupling agent in a wide range of applications including adhesives and sealants, coatings, foundry and fiberglass applications. Gamma-ureidopropyltrialkoxysilane in methanol. Used as a coupling agent in a wide range of applications including adhesives and sealants.