Abstract: A new and improved method and apparatus for forming a circular double-jacketed gasket and the new and improved double-jacketed gasket formed thereby, wherein a substantially linear double-jacketed gasket assembly having a substantially rectangular cross-section is formed from first and second metal strips and a core strip of filler material, and wherein the gasket assembly is edgewise curved in the plane of its greater dimension to a predetermined curvature in the nip between compression rolls, and thereafter, a circular gasket unit is severed from the gasket assembly and the ends of the severed gasket unit are secured by welding to form a circular gasket having a single joint connection in the entire circumference of the gasket.