I need a lot of standard "flat" plug usb cables that have the plug on one end and a shielded insulation.... and open wires on the other end for soldering to other components. I've already looked around on the net, but didn't have much luck. I need a BUNCH like 1000 to start off with. If anyone has a good link for me that'd be great.
Also, if anyone knows where I can get some custom plastic enclosures made, or possibly just a place that supplies generic plastic enclosures that are made to be glued shut and used en masse. I'm needing these for pressure sensors that have a vacuum line nipple on them. Any help is greatly appreciated. Thanks in advance! 
ALL USB cables should be shielded, perhaps except for cables permanently attached to low-speed peripherals (like the highly-flexible cables on mice.) It's part of the USB specification.
I vaguely recall hearing good things about http://www.cablestogo.com/, but it was probably in relation to serial cables; I don't know about USB.
Given economies of scale, it may be cheaper to buy off-the-shelf USB (A-B) cables and cut off the end you don't need. Even in 1000 quantity. If you do go the custom route, you might want to consider some sort of pluggable connector (0.1 inch centers socket of some kind) or some sort of metal stress-relief "thing"; bare wires attaching to PCBs and such are very subject to breakage...
That's cool, thanks for the link, on second thought it might be best to buy cables and just cut them in half. We have already sourced the cable strain reliefs for the project so breakage shouldn't become an issue.
I still really need to find a way to make custom enclosures for some absolute pressure sensors.
Thanks for the help so far.