Provides one-step treatment that encapsulates old rust and prevents new rust. Just brush or spray on. Within minutes, rust is replaced by a durable black polymer coating that may be painted. Excellent protective primer. Not recommended for exterior sheet metal repairs. Can be used when temperature is between 50 Deg. F and 90 Deg. F (10 Deg. C and 32 Deg. C) and on surfaces which do not exceed 200 Deg. F (93 Deg. C). Aerosol - Level 2 Product Features:One-step treatment seals and protects metalEncapsulates old rust and prevents new rustFast-drying, black polymer coatingExcellent protective primer
