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Potterton Heat Exchanger Silicone Door Seal 5139774

Potterton

Potterton Heat Exchanger Silicone Door Seal 5139774

Silicone door seal for the heat exchanger on Potterton Commercial IHE boilers.

Manufacturer part no.
5139774
Showing prices

£79.20

£66.00 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Potterton 5139774 is a silicone door seal for the heat exchanger on Potterton Commercial IHE boilers. It seals the heat exchanger door joint, keeping combustion products and water where they belong. The silicone construction allows the seal to cope with the elevated temperatures at the heat exchanger door.

Signs this part needs replacing

  • Water weeping or staining around the heat exchanger door joint
  • Visible hardening, cracking or flattening of the silicone seal
  • Seal distorted or swollen out of its seating
  • Combustion odour or leakage traced to the heat exchanger door
  • Seal damage found when the heat exchanger door is opened for service

Before you order

  • Confirm the boiler model is a Potterton Commercial IHE 100/300 or IHE 150/300
  • Check the part number on the existing seal or in the appliance documentation is 5139774
  • Inspect the heat exchanger door and its seating for corrosion or damage before refitting a new seal

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.