The PTFE-FDA Collar Gasket DN40 is a precision-cut flat sealing gasket designed for flange and collar connections in UIC and VTA wiped-film molecular distillation systems. Manufactured to tight dimensional tolerances, it ensures a reliable, vacuum-tight or pressure-tight seal between mating surfaces. The gasket material provides resistance to high temperatures, vacuum conditions, and the process fluids used in thin-film distillation, including heat transfer oils and botanical extracts. Compatible with the specific flange diameter and groove geometry indicated in the product name.