Use a 2-3 inch piece of rubber vacuum line. Make sure it is a tight fit for the hard plastic vacuum line you'll be splicing, lube the rubber and slip the ends of the hard line in. All patched.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.