Cytec DAPCO - Silicone Firewall Sealant Pint A+B Kit | 18-4PT
DAPCO 18-4F is a two-component, solvent-free, thixotropic silicone paste. DAPCO 18-4F is most commonly used as a coating, sealant, or filleting material in the construction, repair and maintenance of all types of aircraft. The product can be applied using a variety of methods and is especially useful where fire resistance, exposure to phosphate ester fluids, and/or exposure to extreme temperatures -65°F (-54°C) to 400°F (204°C) are major considerations.
Boeing Specification: BMS 5-63 Rev. N Form B, Class B-4, Type 1