Details:
This is a generic group gasket for Astoria CMA models - for the original see PF Group Gasket OEM
You need to change your group gaskets as part of regular maintenance.
The group gasket seals the portafilter to the group and prevents coffee from escaping during its 9 bars of extraction. As the gaskets age, they go hard and pressure is lost as the coffee will escape from the side of the group.
When do I change the group gaskets?
- You should change your group gaskets every 6 months in a commercial environment and 12 months in a home setting.
- If group gaskets are not changed promptly - you will lose the 9 bars of extraction pressure needed to get a good crema, as the gasket has gone hard and coffee will leak from the group.
- The gaskets will be very difficult to remove, as the rubber goes hard - change promptly and you will save time and improve quality.
We recommend that you always keep spare gaskets.
Type: Flat
Material:
- Rubber: NBR 85SH FDA (Peroxide cured nitrile polymer for food applications) - FDA-approved
- Silicone: 80SH SILICONE FDA Food Safe Silicone - FDA-approved - lasts longer than rubber and is easier to remove if neglected.
Options:
- 2 x Rubber gaskets + paper shim gasket.( In case your group is worn and PF sits over to the left - adding the additional Paper Shim Gasket will position the PF at 6 o clock)
- 1 x Silicone gasket
- Size: (Ø 73mm x 57mm x 8.5mm) Models less than 3 years -
- Size: (Ø 73mm x 57mm x 9 mm) Models more than 3 years +
- Size: (Ø 73mm x 57mm x 9 mm) Models more than 6 years +
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