P/S 700 Firewall Sealant. PPG Aerospace® Sealants
P/S 700 is a high temperature primerless firewall sealant. It has a service temperature range from -65°F (-54°C) to 400°F (204°C, with withstand flash temperatures of 2000°F (1093°C). The material is designed for sealing firewall structures against the passage of air and vapors. P/S 700 is a two-part, synthetic rubber compound. The uncured material is a low sag paste suitable for application by extrusion gun or spatula. It cures at room temperature to form a resilient sealant to common aircraft substrates.