US Patent 7828298 Firewall sealing assembly

A firewall sealing assembly is provided for use between a firewall and a penetrating member. The assembly comprises a flexible coupling and a secondary seal. The flexible coupling is configured to provide a primary seal between the firewall and the penetrating member. The secondary seal is configured to provide a secondary seal between the firewall and the penetrating member. The secondary seal is positioned spaced apart from the flexible coupling to define a seal cavity there between.