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Atkinson brass insert for 10mm soft copper pipe TM4172

Atkinson Equipment

Atkinson brass insert for 10mm soft copper pipe TM4172

British-made, OFTEC-approved brass insert fitted inside 10mm soft copper oil pipe to stop the compression olive crushing it.

At a glance

  • Also known as 1940016
Manufacturer part no.
TM4172
Showing prices

£0.83

£0.69 ex. VAT · VAT at 20%

Available to order · 1-2 working days
Available to order · 1-2 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Atkinson TM4172 is a British-manufactured brass insert fitted inside 10mm soft copper pipe before a compression fitting is tightened. It braces the pipe wall from the inside so the olive can't crush it, giving an airtight joint on domestic oil supply lines, and is approved by OFTEC for this use.

Signs this part needs replacing

  • Oil weeping or leaking from a compression joint on soft copper pipe
  • Pipe visibly crushed or ovalised under a compression olive
  • A joint that won't hold tight even after retightening the compression nut
  • No insert found fitted when remaking an existing joint

Before you order

  • Confirm your pipe is 10mm soft copper, not 8mm or 15mm
  • Fit one insert per joint, before the olive is tightened
  • Have oil pipe joints made or checked by an OFTEC-registered engineer

Not sure which part?

Tell the parts assistant what it's going into — the appliance make and model, or the GC number off the data badge — and it will check this part is on the fit list.

Atkinson TM4172 10mm Copper Pipe Insert