7-Neck PTFE Reaction Vessel Lid, 80mm, 24/40 Outer, 118mm Overall Height. Reaction vessel lid is constructed entirely of PTFE. Low-form lid has seven openings: center neck 1/2 female NPT for PTFE standard taper adapter, side necks 3/4 female NPT, vertical for PTFE standard taper adapters, side neck 3/4 female NPT with 10 X 10 compound angle for PTFE compression fitting used with Lasentec Probe, and side necks 1/4 female NPT. Lid is supplied complete with listed PTFE standard taper adapters for center and vertical side necks, 14mm PTFE compression fitting for 10 X 10 compound angle side neck, and three 1/4 male NPT PTFE plugs. For PTFE coated clamp see CG-141-T-10. For FEP-Encased Stainless Steel o-ring see CG-147-79. PLEASE NOTE: DUE TO SPACE CONSTRAINTS ON THE LID, WE RECOMMEND USING THE CG-2077 OR CG-2077-H 10MM PTFE BEARING WITH THE LOOSENING NUT REMOVED.Lasentec is a registered trademark of Mettler Toledo