The mosquito hotend does not currently have an commercially available sock available, so i will show you how to make your own

STLs for the mold
https://github.com/VoronDesign/Voron-...

The rtv silicone gasket maker i used
https://www.canadiantire.ca/en/pdp/pe...
(if you use a different type, make sure to do your research on if it is suitable for this sort of use case)

All things voron
(printer design, discord, etc)
http://vorondesign.com/

Mosquito hotend
https://www.sliceengineering.com/