These specially blown, sturdy, approximately PYREX® round bottom bell jars have a fine ground finish at the open end. The jar is supplied without a bottom rim flange. The flat ground bearing surface has a contact area equal to the wall thickness at the open end of the jar.

High form with knob and finely ground flange Corning 6885 Made from specially selected mold-blown blanks Bottom flange has a finely ground finish to assure tight sealing with ground glass plates Dimensions (ID x OD): 1577J18 Jar: 5 1/8” x 5 1/2”; 1577J33 Jar: 6 1/8” x 6…