Interplast is a full-line PTFE TeflonĀ®, FEP, PFA and PCTFE manufacturer and fabricator of quality rod, tube, sheet, tape, film, bar, gaskets, seals, insulators and custom fabricated parts. Since 1975, we have provided our customers with great prices and friendly service. We also are pleased to provide custom extrusion processing; we can produce extrusions to your exact specification.