BEarl's 29D10Z Pressure Master Collector Seal - Set of 2 ReviewbP PP Earl's 29D10Z Pressure Master Collector Seal - Set of 2 PSeal is 3" in diameter and 3 bolt pattern stylePGasket material is made of graphite foil for better sealing qualitiesPIncludes aluminum ring and graphite insertPAluminum retainer ring around a replaceable graphite foil sealing insertP