Bison® XL Capsule
What you are really looking for is one of these containers from Bison Designs! A pioneer in geocaching containers, Bison Design micros are the standard in the industry. These containers come with a rubber o-ring to keep the elements out, a small and large key ring, and feature the official Geocaching logo. This big tube design even gives some room for some small swag!
These containers use micro log sheets (sold separately).
Tube is approximately 3 inches long with a 3/4 inch interior diameter.