This Buna-N gasket may be used as a replacement enclosure gasket for many 9 ounce capacity Pyrex or Acrylic gravity lubricators or reservoirs.  Two gaskets are required per reservoir.  Before purchasing replacement parts, consult the factory to verify suitability with the particular lubricator or reservoir model.

The outside diameter of this Buna-N gasket is 3 1/32”, inside diameter is 2 17/32”, and the wall (thickness) is 3/32”.