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Main Washer 45mm x 39mm x 1.5mm 5110853

Main

Main Washer 45mm x 39mm x 1.5mm 5110853

Main 5110853 washer measuring 45mm x 39mm x 1.5mm, listed for the Main Multipoint BF and Multipoint BF ErP water heaters.

At a glance

  • Part type: washer
  • Also known as 1160423
Manufacturer part no.
5110853
GC number
H18-149
Showing prices

£26.77

£22.31 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 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

A flat washer supplied by Main under part number 5110853, measuring 45mm x 39mm x 1.5mm. It is listed for use on the Main Multipoint BF range of water heaters, where it forms a sealing face at the joint it is fitted to. The washer is a service item, so it is replaced when the joint it seals begins to weep or when the existing washer has deformed.

Signs this part needs replacing

  • Water weeping or dripping from the joint the washer seals
  • Visible flattening, splitting or distortion of the washer once removed
  • Hardened or brittle material that no longer compresses to seal
  • Scale or corrosion deposits around the washer face
  • Repeated loss of pressure or water tracking at the connection

Before you order

  • Confirm the appliance model against the fitment list above before ordering
  • Measure the existing washer to confirm the 45mm x 39mm x 1.5mm dimensions match
  • Check how many washers the job requires, as this part is supplied individually
  • Inspect the mating faces for damage or scale, as a worn face will not seal with a new washer alone

Not sure which part?

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