Hi-Mar LB-3897/1 Silicone Hi-Mar Specialties Defoamer / Antifoaming agent >> Silicone Epoxy Resins Dispersible in water Hi-Mar LB-3897/1 Organic/Silicone Defoamer epoxy resins industrial maintenance coatings Silicone defoamer. Used for epoxy resins and industrial maintenance coatings.