These borosilicate glass 4-neck reaction vessel lids/covers have a contact surface that is finely ground to provide a tight seal. Featuring a flat flange, these pressed lids have a center neck and three side necks with outer Standard Taper joints. Use LG-7316 clamps.
NOTE: LG-8081 for use with LG-8080 cylindrical reaction vessels. LG-8083 for use with LG-8082 vessels.