im looking for a cap similar to the one on the Platypus bottle conversion kit. http://www.backcountry.com/store/CAS0449/Platypus-Drinking-Tube-Kit.html
I dont need the hose, just the cap w/ a 90° angle for a diy (read: save $12) job.
Im almost positive somebody has to carry a cap like it, but searches are not coming back. Is there a hardware store or other that carries such a thing?