Also, if you want to connect it to a threaded fitting, Swagelok
www.swagelok.com make a good fitting that uses an insert to stop the tube
collapsing as the tubing is compressed with the two olives. The inserts are
available in brass, aluminium, Nylon, Alloy 400/R-405 steel and stainless.
The fittings are also in a range of materials.

The inserts for Tygon or Vinyl tubing are on page 52 of their "Gaugeable
Tube Fittings and Adapter Fittings" paper catalogue.

Hope this helps,
Peter