Abstract: A multi-layered composite gasket (10) includes three, preferably metallic cores (12, 14). A solid center core (12) is flanked on both sides by bonded paper layers (30). Perforated cores (14) mechanically interlock with each paper layer (30) through inwardly directed tangs (22). Graphite layers (26) are disposed outside of each perforated core (14) and are mechanically interlocked thereto by outwardly directed tangs (20) extending from the perforated cores (14). When using the gasket (10) material for sealing cylinder heads in internal combustion engines, a fire ring (46) may be affixed with a fire ring holder (48). The gasket (10) can be manufactured by making first and second preform sheets (32) comprised of one perforated core (14) sided with one paper layer (30) and one graphite layer (26). The preform sheets (32) are then bonded to a center core (12) using a heat activated adhesive.

Abstract: A multi-layered composite gasket (10) includes three, preferably metallic cores (12, 14). A solid center core (12) is flanked on both sides by bonded paper layers (30). Perforated cores (14) mechanically interlock with each paper layer (30) through inwardly directed tangs (22). Graphite layers (26) are disposed outside of each perforated core (14) and are mechanically interlocked thereto by outwardly directed tangs (20) extending from the perforated cores (14). When using the gasket (10) material for sealing cylinder heads in internal combustion engines, a fire ring (46) may be affixed with a fire ring holder (48). The gasket (10) can be manufactured by making first and second preform sheets (32) comprised of one perforated core (14) sided with one paper layer (30) and one graphite layer (26). The preform sheets (32) are then bonded to a center core (12) using a heat activated adhesive.