Vaillant 981111 Packing Ring Complete

The Vaillant 981111 is a gasket manufactured by Vaillant for use within its water heating appliance range. It forms part of the sealing group of components, sitting between mating surfaces to prevent water or combustion by-products escaping from the joint. Gaskets of this type are consumable items: they compress under load, take up surface imperfections and are relied upon to hold a seal across the service life of the appliance.

• Visible weeping or a damp trace around the joint the gasket seals
• Water staining, crusting or limescale build-up at the mating face
• The gasket has hardened, flattened or cracked and no longer springs back when compressed
• A joint that has been disturbed during servicing and will not seal again on reassembly
• Intermittent drips that worsen as the appliance heats up and the joint expands

• Confirm the appliance model and serial number, then cross-check the part number 981111 against your unit's parts list
• Inspect the mating faces while the joint is open; a scored or corroded face will not seal even with a new gasket
• Check whether the joint uses additional seals or washers that should be renewed at the same time
• Retain the old gasket until the replacement is fitted and the joint has been checked for leaks