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Alpha Complete Boiler Seal Kit InTec2 Eco 3.025322

Alpha

Alpha Complete Boiler Seal Kit InTec2 Eco 3.025322

Alpha complete boiler seal kit for InTec2 and Eco models, part 3.025322, supplied as a full gasket, O-ring and washer set.

At a glance

  • Part type: Gaskets, O-rings, seals and washers
  • Also known as COMPLETE-BOILER-SEAL-KIT, 1258837
Manufacturer part no.
3.025322
Showing prices

£68.98

£57.48 ex. VAT · VAT at 20%

In stock
Cut-off passed — dispatches next working day
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 Alpha 3.025322 is a complete boiler seal kit covering the gaskets, O-rings, seals and washers used across the InTec2 and Eco boiler families. It is produced by Alpha as a service item for these appliances, where the seals form the airtight, watertight joints between the boiler's internal components and its casing. Renewing the full set in one go restores those joints and helps the boiler hold pressure and run dependably through a service or repair.

Signs this part needs replacing

  • Water weeping or tracking from joints around the boiler's internal seals
  • Gaskets that have hardened, flattened or cracked and no longer sit proud of their grooves
  • Traces of scale, staining or residue at a seal face after the appliance has been opened
  • Pressure loss or repeated top-ups that point to a seal rather than a component fault
  • A seal kit already stripped out during a service and not yet replaced before reassembly

Before you order

  • Check the GC number on the appliance data badge against the list above, as the kit covers several InTec2 and Eco variants
  • Confirm the model and, where relevant, the serial number so the correct seal set is supplied
  • Have the appliance isolated and drained as required before fitting the seals

Not sure which part?

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