Just got a Breville dual boiler last month, the OPV was set to 10-10.5 bar. Wanted to adjust it then saw this seal thing... I guess it's a warranty thing?

I guess there's no way to adjust the OPV without breaking it, is there?

I don't think any 'seals' can officially void the warranty at least in the USA though Breville can claim that you killed the pump. Also it seems to be more of a paste than any tamper proof seal so should be possible to just add it back on if needs to be sent to Breville if you can figure out what that is.
https://www.ifixit.com/News/11748/warra ... re-illegal