Annular gasket for static sealing for very high temperatures and small pressure drops, and method of making

摘要: A seal adapted for environments in which high temperatures are experienced and low pressure drops met is made by coiling plural spirals about itself a metallic work-hardened tape has, cross-section shape the form of an open V, throat-like recess having semicircumferential outline being formed correspondence with apex V. The terminal portions held together rivets or spot-welding. machine also provided to seal, comprises specially shaped roller pairs arranged sequential order, so as effect on metal all operations necessary impart expected final thereto.