NY • Sonneborn Building Products, 1-800-243-6739 in Minn., MN • Tremco Incorporated, 1-800-321-7906 in Beachwood, OH Below is information on the fire retardant sealant used on glass block fire tests: • Fyre-Sil Silicone Sealant (for fire- rated construction), by Tremco, Inc. (...