This undercup or group head gasket is a part of regular maintenance on your Pasquini machine. If your group is leaking while you're pulling a shot, it's very likely you need to replace your group gasket.
This is the most common seal and will be the one used for a majority of Livia 90 models. If you have a machine built post 2000 or has a serial number larger than 24,000 then it will use this seal.
This particular gasket is the flat style of undercup gaskets for Pasquini machines. There is also a round style gasket found here.
Be sure to check out the style of gasket you have in your machine- Pasquini offers a few different options. If you have any questions please call our service department for more info.
This is an OEM part.