Isomac O-Ring for Heating Element with Groove.
EPDM or Silicone (based on stock on hand)
The Heating Elements on some Isomac HX machines, such as element 50921 or 50921.20, are occasionally manufactured with a recessed groove on the flange to accommodate this O-Ring instead of the flat Teflon gasket. Please inspect your element prior to ordering.
