Profile: International Polymer Engineering, Inc. assembles and distributes custom profile extrusions made from porous polytetrafluoroethylene(PTFE) & a variety of melt thermoplastic materials. We are ISO 9001:2000 certified. We have a patented line of replacement biopsy channels that range from 2.0 to 5.2 mm ID. Our patented FluoroFlex endoscopic working channels (EWC) are constructed with an inner layer of solid PTFE, while the outer layer is porous PTFE with a spiral support incorporated into the structure for radial support of the inner layer. The outer porous PTFE layer acts like a spring wrap providing kink and compression resistance. Both the inner and outer layers of material have a long history of use in medical products.