ATAG O-Ring 13.94mm x 2.62mm Yellow Silicone 87328700

The ATAG 87328700 is a yellow silicone O-ring with nominal dimensions of 13.94 mm x 2.62 mm. It is a sealing component used within ATAG gas boilers and water heaters, where it sits in a joint or gland to prevent water or gas leakage. Silicone construction suits sealing duties where resistance to temperature and ageing is required.

• Visible water weeping or damp staining around the joint the O-ring seals.
• The O-ring has flattened, hardened or taken a permanent set and no longer sits proud of its groove.
• Cracking, splitting or surface crazing on the ring.
• Scale or corrosion deposits on the sealing face causing a poor seat.
• Repeated loss of pressure or a small persistent drip traced to the sealed connection.

• Measure the old O-ring and confirm the nominal 13.94 mm x 2.62 mm dimensions match before fitting.
• Check the material and colour of the original ring, as silicone is specified for this application.
• Confirm the appliance model against the fit list above, as the same part number covers a wide range of ATAG units.
• Inspect the sealing groove and mating face for damage or scale that could cause the replacement to fail.