Spare O-Rings

[georgeCA951]

I wanted to get people's opinion on if these would be a good buy for some spare o-rings

http://m.harborfreight.com/225-piece-nitrile-o-ring-assortment-67677.html

 

[coalyard]

Most o-rings on vape gear are metric sizes. I get my spares at ACE hardware. They are cheap enough for the few that I need.

 

[iowajosh]

There is a metric version of that kit. I just bought one. But, you'd just as well buy their $3 plastic caliper so you can measure for ones you need. I was hoping to find some rings that would fit my kayfuns but they are all 1mm cross section and all but the smallests two sizes in the kit are 2.4mm cross section and they are way too fat what I was trying to do.