SIFCO (Stainless Insert Flange Company) formed as a division of O’Hara Brothers Machine Company in 1955, is a manufacturer of full line of specialty insert flanges ranging from roll-on flanges of stainless steel to jacket flanges of Hastelloy C-276.
From the development of the rotating bolting ring in the early 1950's to the recent development of up to 2500 LB fully ASME rated insert flanges, SIFCO continues to improve and develop the insert flange. SIFCO has over 800 different insert flanges available from 1/2 inch to 12 inch sizes Today, Stainless Insert Flange Company is the leading supplier of insert flanges for the process piping industry.
