Why the 7 mm version?

The extra 1 mm over the 6 mm standard recovers the seat on a worn group and brings the handle lock angle back.

What is the difference between 7 mm and 6 mm?

6 mm is the standard size; 7 mm is oversize, to make up for group wear and lock the handle back in the right position.

Does it fit a new machine?

On a new group the 6 mm standard is the right one. The 7 mm is for well-used groups that have lost tightening.

Which La Marzocco models is it compatible with?

It matches reference L105/B9 and fits the 58 mm group — Linea, Strada and GS3, among others. Check the size on the current gasket.

Request a quote through our form and tell us the La Marzocco model. We ship from Portugal to all of Europe.

Gaskets & O-rings

La Marzocco group gasket, 4-slot — 7 mm thickness

Name: La Marzocco group gasket, 4-slot — 7 mm thickness
SKU: ET-100155

Part no. ET-100155

Oversize conical group gasket for La Marzocco (ref. L105/B9), 72 × 55 × 7 mm with 4 cuts, in NBR rubber at 87 Shore A. At 1 mm above the 6 mm standard, it recovers the group seat on well-used machines — Linea, Strada and GS3 — and brings the handle back to six o'clock on lock.

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Prices and availability on request. We reply in English or Portuguese.

Specifications

Part type	group gasket conical — oversize
Part number	L105/B9
Dimensions	72 × 55 × 7 mm
Thickness	7 mm (1 mm more than standard 6 mm)
Material	NBR (nitrile) — hardness 87 Shore A
Design	4 cuts conical
Compatible models	Linea Classic / PB / Mini, Strada, GS3

Compatible with

La Marzocco

Technical reference

L105/B9

FAQ

Why the 7 mm version?: The extra 1 mm over the 6 mm standard recovers the seat on a worn group and brings the handle lock angle back.
What is the difference between 7 mm and 6 mm?: 6 mm is the standard size; 7 mm is oversize, to make up for group wear and lock the handle back in the right position.
Does it fit a new machine?: On a new group the 6 mm standard is the right one. The 7 mm is for well-used groups that have lost tightening.
Which La Marzocco models is it compatible with?: It matches reference L105/B9 and fits the 58 mm group — Linea, Strada and GS3, among others. Check the size on the current gasket.
How do I order?: Request a quote through our form and tell us the La Marzocco model. We ship from Portugal to all of Europe.

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