ARISTON D.75 Flange Gasket for Water Heaters, 570393

ARISTON 570393 is an original-type rubber flange gasket for electric storage water heaters, designed to provide a watertight seal between the water-heater tank and the flange assembly.

In ARISTON spare-parts documentation, the part is identified as GUARNIZIONE FLANGIA D.75. The gasket is used with compatible round flange constructions and helps prevent water leakage at the flange connection.

Spare-parts catalogues list part number 570393 for a number of ARISTON water heaters, including TI 50/80/100/120/150 QB, SE 10R and ST 10R models, as well as selected PRO R, BDR and NUOS constructions.

Depending on the measurement method, spare-parts catalogues specify an outside diameter of approximately 108–110 mm and an inside diameter of approximately 36–37 mm. D.75 is the ARISTON designation used for this flange-gasket construction.

When servicing the heating element, flange or magnesium anode, the condition of the gasket should also be checked. If it has hardened, deformed, cracked or otherwise become damaged, replacement is recommended to maintain a watertight connection after reassembly.

Before ordering, check the exact water-heater model and product code and confirm that ARISTON gasket 570393 is specified for the appliance flange construction.

Technical information