StormGuard-920 is a one-part, neutral cure, 100% RTV silicone sealant formulated for use anywhere there is a need for a water-tight and or airtight seal. This product forms a strong, durable, flexible, water resistant seal for joints by providing excellent adhesion to most non-porous surfaces. It is specially formulated for weather resistant external window & door applications. It can be exposed to rain in 30 minutes and is non-corrosive, not paintable and requires a solvent for clean-up. Made in the USA.