A corrugated metal gasket for use between two flanges, said corrugated metal gasket comprising: an annular gasket substrate having a sealing core with a pair of opposing face surfaces , wherein: a plurality of substantially uniform, sinusoidal, and generally concentric corrugations cut into said opposing face surfaces of said sealing core by machining, said plurality of corrugations including a plurality of alternating peaks and troughs arranged such that said peaks of a first face are aligned with said troughs of a second face, said sealing core extending in a radial direction from an inner diameter to an outer diameter of a material stock piece; said sealing core having a generally uniform axial thickness in an uncompressed state such that a thickness between said peaks of the first face and said troughs of the second face is generally equal to a thickness of transition portions between said peaks of the first face and said troughs of the second face; and by including an outer guide ring , said outer guide ring being a separate component which is assembled into said annular gasket substrate, said annular gasket substrate being constructed and arranged with an annular groove , and said outer guide ring being assembled into said annular groove . an annular gasket substrate having a sealing core with a pair of opposing face surfaces , wherein: a plurality of substantially uniform, sinusoidal, and generally concentric corrugations cut into said opposing face surfaces of said sealing core by machining, said plurality of corrugations including a plurality of alternating peaks and troughs arranged such that said peaks of a first face are aligned with said troughs of a second face, said sealing core extending in a radial direction from an inner diameter to an outer diameter of a material stock piece; said sealing core having a generally uniform axial thickness in an uncompressed state such that a thickness between said peaks of the first face and said troughs of the second face is generally equal to a thickness of transition portions between said peaks of the first face and said troughs of the second face; and by including an outer guide ring , said outer guide ring being a separate component which is assembled into said annular gasket substrate, said annular gasket substrate being constructed and arranged with an annular groove , and said outer guide ring being assembled into said annular groove . a plurality of substantially uniform, sinusoidal, and generally concentric corrugations cut into said opposing face surfaces of said sealing core by machining, said plurality of corrugations including a plurality of alternating peaks and troughs arranged such that said peaks of a first face are aligned with said troughs of a second face, said sealing core extending in a radial direction from an inner diameter to an outer diameter of a material stock piece; said sealing core having a generally uniform axial thickness in an uncompressed state such that a thickness between said peaks of the first face and said troughs of the second face is generally equal to a thickness of transition portions between said peaks of the first face and said troughs of the second face; and by including an outer guide ring , said outer guide ring being a separate component which is assembled into said annular gasket substrate, said annular gasket substrate being constructed and arranged with an annular groove , and said outer guide ring being assembled into said annular groove . <EOS>