Fusion 360 File:
https://goo.gl/Mz2PxZ

Vacuum cleaner Adapter
Fusion 360 File:
https://goo.gl/9Cdcrs
STL File:
https://goo.gl/wcSpJD

O-Ring 37.5 x 3.55mmm

Lux & Co. GmbH:
6mm EPDM moosgumi round cord

eBay:
900 mbar vacuum pump ZW 280F compressor piston pump

aliexpress.com:
BSPT PC8-02, 8mm to 1/4' Pneumatic Connectors male straight one-touch fittings