La Marzocco GS Cage Style Flange Gasket
± 110 x 96 x 2.5 mm, bolt holes ø 8 mm I.D. For steam to 399° C (750° F), compressed sheet, aramid fiber with nitrile binder.
It has been recommended to use Loctite #68035 with this gasket. This will not work with the welded stud boilers. For that version use the silicone one.