Abstract: A method and apparatus for welding two separate ends of an extrusion or two separate extrusion ends to form a flashless extrudate or gasket by having a first and a second mold for supporting and clamping the extrusion ends, and a spacer bar for positioning the extrusion ends to a location within the mold. A heating element elevates the temperature of the extrusion ends to a welding condition, and a clamping device is used for securing the extrusion ends. A flashless welding operation results by inserting and clamping at least one heated extrusion end into a welding mold until an acceptable contact pressure is obtained against the opposing heated extrusion end.

Abstract: A permanently lubricated film gasket for providing a fluid-tight seal between a corrugated pipe and a smooth annular section of an outer pipe or section when the corrugated pipe and the outer pipe or section are in a relative surrounded and surrounding relationship. A first portion of the gasket is shaped to fit within a groove or recess of the corrugated pipe. A second portion of the gasket extends from the first portion. The second portion is at least partially comprised of permanently lubricated film for facilitating in the connection of the pipes along a single direction.