Abstract: Method and apparatus for circumferentially applying heat to a cylindrical object comprising an annular heating cavity which is disposed in surrounding relationship about a peripheral section of the object. A roller supported platform supports the heating cavity relative the object and, by translation, applies heat to progressive sections thereof. In order to accommodate various alignments of the object and therefore the various resulting heat distributions within the cavity the connection between the platform and the annular cavity is adjustable, thus permitting any eccentric alignment thereof relative the object.