manufactured articles and methods of producing such articles are disclosed where the article has a thermoplastic polymer component and a curable polymer component . the curable polymer may be moisture - curable polymer , or microwave , dielectric or radio frequency curable polymer . the articles may be manufactured by a variety of polymer processing methods including extrusion , co - extrusion , co - molding , injection molding and calendering . a variety of articles and shapes may be made by the method including electric wire and cable , and weatherstripping .