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Main Case Seal 5110858

Main

Main Case Seal 5110858

Case seal (5110858) for Main Multipoint BF and Multipoint BF ErP water heaters.

At a glance

  • Part type: case seal
  • Also known as 1160438
Manufacturer part no.
5110858
GC number
H18-278
Showing prices

£122.89

£102.41 ex. VAT · VAT at 20%

Available to order · 1 working day
Available to order · 1 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 Main 5110858 is a case seal used on Main Multipoint BF and Multipoint BF ErP water heaters. It seals the appliance casing joint, preventing water and flue gases from escaping past the case. It is a service part intended for replacement during maintenance or repair of the water heater.

Signs this part needs replacing

  • Water weeping or tracking around the casing joint
  • Visible staining, corrosion or scale build-up at the seal face
  • The seal is hardened, flattened, cracked or deformed
  • Drips or moisture appearing during appliance operation
  • Seal no longer sits correctly in its seating groove

Before you order

  • Confirm your appliance model against the fit list above
  • Check the part number on the existing seal or the manufacturer's parts list
  • Inspect the seal seating face for damage or distortion before fitting
  • Verify the seal is seated correctly and the casing is reassembled to the manufacturer's instructions

Not sure which part?

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