O-ring- DIFF pour De Dietrich Chappée - 722137300

The 9.19 x 2.62 O-ring ensures the tightness of connections within the hydraulic circuit, helping to prevent leaks and maintain stable pressure.


It allows for reliable adjustment in the designated housings and contributes to the durability of the installation. This component plays an essential role in the safety and performance of the heating system.


Technical information :



Equivalent DE DIETRICH CHAPPEE reference : 722137300.
Ensures the tightness of hydraulic connections.
Provides reliable and long-lasting support over time.

Replacing the seal will preserve the tightness of the circuit and ensure the proper functioning of the appliance.


Safety information :


Before carrying out any work, switch off the power supply to the appliance and shut off the hydraulic and gas circuits.




Additional information:
This part is an original spare part from parts manufacturer, it is labelled and packaged under the DIFF distribution brand