Is there any kind of industry standard for 510 drip tip o-rings?

[pesky_human]

Drip Tip Replacement O Ring - Avid Vaper

2 for 99¢ . . . . . not cheap.





30¢ here (ea.) . . . . https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=10&cad=rja&ved=0CGoQFjAJ&url=http%3A%2F%2Fwww.ljesmokes.com%2Findex.php%3Fmain_page%3Dproduct_info%26products_id%3D538&ei=KERjUsmYKur6igLGsYCoBA&usg=AFQjCNEqkc1wihShO46vDBDqbuLdp4B5Ig&sig2=D-biS6pYhfl7W2ooCBeE2g&bvm=bv.54934254,d.cGE

Wow. Highway robbery.

If you find something that works, go to McMaster-Carr online and buy them for pennies a piece.