I know this application and the material involved. There could be an alternative being developed for this application that is cheaper and more readily avilable. If you are interested then I could put you in touch with the relevant people depending on your location and interest.
I think the correct trade name you might be looking for is Pomalux. It's the trade name of one extruder for their semifinshed extruded acetal. It is co-polymer rather than homopolymer (Delrin). ESD normally stands for Electrostatic dissipative. In acetal this can be acheived by the additon...