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Johnson & Starley Heat Exchanger Inspection Gasket BOS00836

Johnson & Starley

Johnson & Starley Heat Exchanger Inspection Gasket BOS00836

Heat exchanger inspection gasket for Johnson & Starley warm air units and gas boilers, sealing the inspection cover joint.

At a glance

  • Part type: gasket — heat exchanger inspection
  • Also known as 1690125
  • Have the appliance isolated and any required gas safety checks planned before work begins
Manufacturer part no.
BOS00836
GC number
230-394
Showing prices

£9.22

£7.68 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 BOS00836 is a heat exchanger inspection gasket manufactured by Johnson & Starley. It seals the inspection cover on the heat exchanger of Johnson & Starley warm air units and gas boilers, maintaining a gas-tight joint at the access point. The gasket is a service item that is renewed whenever the inspection cover is disturbed.

Signs this part needs replacing

  • Visible cracking, hardening or flattening of the gasket material
  • Staining or soot tracking around the heat exchanger inspection cover
  • A weeping or leaking joint at the inspection cover after reassembly
  • Combustion readings that drift or fail to stabilise at the inspection point
  • The gasket is disturbed or damaged during heat exchanger inspection or cleaning

Before you order

  • Confirm your appliance model against the manufacturer's parts list before ordering
  • Check the condition of the inspection cover and its seating face for distortion or corrosion
  • Confirm the gasket is required for the inspection cover joint on your specific unit
  • Have the appliance isolated and any required gas safety checks planned before work begins

Not sure which part?

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