Hamworthy Water Connection O-Ring 531299024

The Hamworthy O-Ring Flow/Return Connection Flange to Heat Exchanger is a sealing O-ring used where the flow and return connection flange meets the heat exchanger. It is supplied by Hamworthy under part number 531299024 and is listed as a water connection O-ring for the Wessex 220M. The O-ring forms the watertight joint at that connection, preventing leakage from the primary circuit at the flange face.

• Weeping or dripping at the flow or return connection where it meets the heat exchanger
• Water staining, crusting or corrosion around the flange joint
• Dampness or tracking marks on nearby components beneath the connection
• A hardened, flattened or visibly perished O-ring once the joint is opened
• Repeated pressure loss on the primary circuit with no other obvious source

• Confirm the boiler model is the Wessex 220M high efficiency floor standing unit
• Check the part number 531299024 against the existing component or the manufacturer's literature
• Inspect the flange faces for pitting or damage before refitting, as a marked face will not seal reliably
• Verify the O-ring seat is clean and free of scale or old seal residue before installation