Gaggia Group Gasket (Classic, black rubber 8.5mm)
verified · 13 July 2026- Part type: Group gasket
- Fits group: Gaggia Classic group (EF0030A boiler)
- Brand: Gaggia
Fits these machines
- Gaggia Classic Pro (E24) (58mm portafilter)
The group gasket (grouphead seal) is the rubber ring seated inside the grouphead that the portafilter clamps against to seal under brew pressure. It is a wear part — as it hardens and compresses with heat and use, the portafilter starts to sit slack or the group weeps during the shot, which is the classic sign it is due for replacement. Unlike baskets and portafilters, a gasket is keyed to the grouphead, not the portafilter diameter, so it is matched by machine/group rather than by a 58mm-style standard.
Gaggia’s own part is “8.5 mm thick and made of black rubber,” and Gaggia states it fits “the Gaggia Classic Pro and all semi-automatic espresso machines with an EF0030A boiler” — so it is cross-referenced to the Gaggia Classic Pro here (Gaggia’s part number 11004543). It does not fit the pressure-profiling or lever machines in this database, whose groupheads seal differently. Verified against Gaggia’s official parts page on 2026-07-13.
Also fits the same machines
Other items confirmed to fit machines this one fits — useful if you're kitting out a single setup. The count is how many of those machines overlap; nothing here is a new fitment claim.
- Gaggia 58mm Single-Shot Filter Basket (58mm basket) — shares 1 machine
- Gaggia Barista Pro IMS Filter 20g Nanotech (58mm basket) — shares 1 machine
- Gaggia Bottomless Filter-holder (ashwood handle) (Portafilter) — shares 1 machine
- Gaggia Crema Perfetta Pressurized Basket Kit (58mm basket) — shares 1 machine
- Gaggia Wooden Handle Filter-holder (spouted) (Portafilter) — shares 1 machine
- IMS B68 Competition 1 Cup H24.5 (B681TH24.5E) (58mm basket) — shares 1 machine
FAQ
- What does the Gaggia Group Gasket (Classic, black rubber 8.5mm) fit?
- It is a group part for the Gaggia Classic group (EF0030A boiler) — it fits by grouphead, not by portafilter size. See the machines listed below.
- Which machines does the Gaggia Group Gasket (Classic, black rubber 8.5mm) fit?
- Gaggia Classic Pro (E24) — each confirmed against manufacturer sources (listed below).
Sources
- https://www.gaggia-na.com/products/gaggia-classic-baby-evolution-group-gasket (archived) — Official Gaggia North America product page, read firsthand 2026-07-13. States verbatim: 'A replacement group gasket compatible with the Gaggia Classic Pro and all semi-automatic espresso machines with an EF0030A boiler. This gasket is 8.5 mm thick and made of black rubber.' Part Number: 11004543.
Spot an error? The fastest fix is the source itself —send us the manufacturer page that contradicts this entry and we'll correct it and cite it. See how we verify.