Reaction flask head fabricated from 316 stainless steel. Replaces flat or domed glass heads. This 1/4-inch thick head has the same openings as the flat glass head and accepts PTFE joint inserts secured top and bottom of plate with threaded nuts. 10 L size uses one 45/50, three 29/42 and three 24/40 inserts. Stainless head is assembled to reaction flask in the same manner as flat glass head using 6525 coupling (not included) and one spacer.