I like to give rubs to people for holidays/b-days and would like to find some containers that I could make some in bulk and seal/label. I have a chamber vacuum sealer that's pretty large. Any ideas where to get the spice containers that you can seal? Google wasn't very helpful...it had lots of glass containers. Thanks.

I've done this in the past with the regular bags that are used. I don't think I've ever seen something more substantial that is small enough. Following.

i use mason jelly jars

I recently went through this for similar project. I think if you search packaging/bottle supply you'll find some options.

For example:
https://www.specialtybottle.com/