This will only fit the old "cage" style groups, with the removable boiler nuts and studs.
Steam flange gasket
± 4.25" Wide x 3.73" Long
2.25" x 2.09" ISD ,
8ea 0.31" Bolt holes.
522B 3/32" Thick
For steam to 399° C (750° F), compressed sheet, aramid fiber with nitrile binder.
Made in the USA.
It has been recommended to use Loctite #68035 with this gasket.
This will not work with the welded stud boilers. For that version use
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