Patent ID: 8087674
Filing Date: 2012-01-03
Classification: F16L,Y10S

Abstract:
1. A firewall sealing assembly configured to be mounted to a firewall and around a penetrating member, the firewall sealing assembly comprising: first and second retaining rings each having an opening formed therein through which the penetrating member is received when the firewall sealing assembly is mounted to the firewall; a primary seal retained between the first and second retaining rings and configured to sealingly engage an outer surface of the penetrating member when the firewall sealing assembly is mounted to the firewall; a secondary seal disposed adjacent the second retaining ring substantially opposite the primary seal and configured to sealingly engage an outer surface of the penetrating member when the firewall sealing assembly is mounted to the firewall; and an anti-friction plate disposed adjacent the secondary seal substantially opposite the second retaining ring; wherein the first and second retaining rings, the primary seal, and the anti-friction plate cooperate with the penetrating member and the firewall to define first and second seal cavities when the firewall assembly is mounted to the firewall, the first seal cavity axially bounded by the primary seal and the secondary seal and radially bounded by an inner peripheral edge of the second retaining ring and an outer surface of the penetrating member, and the second seal cavity axially bounded by the secondary seal and the firewall and radially bounded by an inner peripheral edge of the anti-friction plate and an outer surface of the penetrating member.