These specially blown, sturdy, approximately 12.3L 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. -Warning: do not use with heat, pressure or vacuum applications.

Item Description:
These specially blown, sturdy, approximately 12.3L 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. -Warning: do not use with heat, pressure or vacuum applications.

Product Family Description:

These specially blown, sturdy, round bottom jars have a fine ground finish at the open end. The jar is supplied without a rim flange. The flat, ground, bearing surface has a contact area equal to the wall thickness at the open end of the jar. Do not use with heat, pressure, or vacuum ­applications.

Not intended for vacuum applications.