Alkoxy silicone flange sealant liquid formulated for bonding, sealing and coating of components for the military, automotive and industrial markets.LOCTITE SI 5045 is a translucent, high strength alkoxy silicone flange sealant liquid specifically formulated for bonding, sealing and coating of components for the military, automotive and industrial markets. It is non-slumping and ideal for reinforcing and strain relieving delicate components. It retains its prosperities through severe environments and is suitable up to +392 °F (+200 °C).