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Navien Mix Chamber Packing 20027108A

Navien

Navien Mix Chamber Packing 20027108A

Packing for the mix chamber on Navien NCB-CE ERP system and combination boilers, part number 20027108A.

Manufacturer part no.
20027108A
Showing prices

£12.44

£10.37 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 mix chamber packing is a sealing component used on Navien NCB-CE ERP boilers, listed under part number 20027108A. It seals the mix chamber joint, preventing gas and air leakage from the mixing assembly. It is a service part intended for replacement during maintenance or repair of the combustion air and gas mixing arrangement.

Signs this part needs replacing

  • Dampness, staining or water traces around the mix chamber joint
  • The packing is hardened, flattened, cracked or visibly deformed
  • Scale, corrosion or debris build-up on the sealing face
  • Combustion readings drifting outside the expected range on flue gas analysis
  • Whistling or unusual noise from the mixing assembly area

Before you order

  • Confirm the boiler model and serial number against the fitment list above
  • Check the part number marked on the existing packing before removal
  • Inspect the mix chamber sealing faces for damage or distortion
  • Confirm the boiler is isolated and depressurised before starting work

Not sure which part?

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

Navien Mix Chamber Packing 20027108A