22-66 Mono-Tack S.E. Spray Adhesive is a soft creamy white, water-based spray adhesive that dries to a clear fire-resistive film. This adhesive is designed for fiberglass to fiberglass, fiberglass to metal applications, and edge coating duct liner. 22-66 develops very quick tack for a water based adhesive. It is ideally suited for sheet metal shops and assembly line operations where adhesive safety and performance are demanded.