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Vaillant Stuffing Box 012156

Vaillant

Vaillant Stuffing Box 012156

Vaillant stuffing box 012156 for water valves fitted to pre-June 2000 boiler and water heater models.

At a glance

  • Also known as 1372112
Manufacturer part no.
012156
Showing prices

£10.13

£8.44 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 Vaillant 012156 stuffing box is a gland seal assembly for water valves on older Vaillant appliances. It seals the valve spindle where it passes through the valve body, preventing water escaping along the spindle. This component is specified for water valves manufactured before June 2000 and replaces the earlier code 012153.

Signs this part needs replacing

  • Water weeping from the valve spindle, particularly when the valve is operated
  • Persistent drips collecting around the gland nut or valve body
  • Damp, staining or corrosion around the spindle area
  • The spindle becoming stiff or difficult to turn as the gland tightens or dries out
  • Water tracking down the valve body onto surrounding components

Before you order

  • Confirm the appliance is a Vaillant model listed in the fitment above
  • Check the water valve was manufactured before June 2000, as this part is specified for that period
  • Compare the existing part against code 012156, noting that 012153 is the superseded code
  • Verify the fault is at the spindle gland rather than the valve body or connections

Not sure which part?

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