SCE Gaskets Ford 429-460 4.500 X .042 Pro Seal Composite HG

Pro Seal Composite Head Gasket for Ford 429-460 1968-1997. Bore Opening: 4.500? Compressed Thickness: .040? Materials: Steel core clinched to graphite facing with stainless fire ring armor. Package Contents: 1 Piece
SCE Pro Seal composite head gaskets are simple but trick. These high performance head gaskets are constructed of three elemental components, pure graphite facing mechanically clinched to a perforated steel core with 321 stainless fire ring armor. Unlike other brands there is no o-ring behind the fire ring, this allows for a strong but compressible gasket which will not damage aluminum cylinder heads from fretting or friction brinnelling. Yet the 321 stainless combustion seal is strong enough to withstand up to 15lbs of boost or a 100hp shot of nitrous.