The present invention provides a non-rusting unitary co-extruded article, which may be used for a variety of purposes, including a seal. The co-extruded article is comprised of at least two dissimilar discrete parts such as a rubber component, referred to herein as the "rubber extrudate," and a thermoplastic...http://www.google.de/patents/US5334458?utm_source=gb-gplus-sharePatent US5334458 - Rubber/plastic co-extrusion
