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Vitodens Air Vent O-Ring Question

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Beaver33
Beaver33 Member Posts: 22
in THE MAIN WALL
My Vitodens 100W WB1B has a leak at the O-ring at the base of the Automatic Air Vent (Part No. 7819 971)? The air vent itself is fine.

I would like to purchase a replacement O-ring. Does anyone know its specifications/material?

Where can replacements be obtained?

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  • hot_rod
    hot_rod Member Posts: 22,158
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    if you can remove it, take it to an auto parts store, they have many sizes US and metric. Same with hydraulic repair shops 
    Or try to order it through a Viessmann dealer

    Its probably a straight thread that uses the ring as the seal
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream
  • mattmia2
    mattmia2 Member Posts: 9,672
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    if you measure it i'm sure you can find it at theoringstore.com or a couple others.

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