All Glass Vari-Flow Vape Cartridges I O2V-GCVF

starting at: $9.99

(12 customer reviews)


Our new All Glass Vari-Flow Cartridges feature O2VAPE’s award winning ceramic cell technology in an all glass cartridge, for the ultimate in clean, metal free vaping. 


We’ve taken the best vape cartridge in the world and made it even better! With the our new All Glass Vari-Flow Cartridges, your oil never comes in contact with any metal surfaces. The only metal present in the cartridge is in the 510 threads, which allows for the electrical conductivity that lets your battery power the internal heating coil and get to just the right temp. The consistency of the heating element means that you can use the same voltage that you would with our original ceramic cell carts.


This latest version of our best-selling All Glass Cartridge now features Vari-Flow technology, which allows you to adjust the air flow rate into the cartridge as you inhale to fine tune your perfect puff.


Take your flavor to the next level with a variable voltage vape and the all glass cartridge. We have tested extensive iterations and design elements with all glass cartridges, finding that they were effected by issues like increased leakage, fragile glass, or poor performance. By taking our testing to the limits we found a winning combination that provides those looking for an alternative to cartridges containing any metals with the highest quality option.  While we make sure that everything you find on this site passes rigorous heavy metals testing, we also understand the draw for a cart that is all glass, so without further ado, The O2VAPE All Glass Vari-Flow Cartridge.


As this is an all glass cart, there is still a need to be a little easier on it when filling and capping. No matter how tough we make them, a glass pole will always be more fragile than a metal pole. That said the trade off for an all glass option makes up for that.

Available in .5ml and 1ml sizes, making them fully compatible to be filled with oil straight from an applicator or vape filling machine.

For use with most 510 Thread Vape Pen Battery with 3.7 Volts or higher, including these best selling vape pens: may not fit on some drop down models

*Will not work with lower voltage batteries, such as our Original Buttonless Battery.


Get ready for the future of oil vape cartridges!  While everyone else has been catching up with the quality of our glass and ceramic vape cartridges, we have been continuing to perfect the puff with our cutting edge 510 thread ceramic vape cartridges.  That’s right, now you can continue using O2VAPE’s great vape products while going 100% glass and award winning wickless ceramic technology!


  • Internally heated ceramic element
  • Available in .5ml and 1ml sizes
  • Wickless and Coil-less design – your oil is heated directly from the ceramic element


That means that you should screw this right on to the 510 thread of  our 3.7 volt button vape pen batteryVariable Voltage Pen, then go ahead and rip the cleanest and smoothest tasting hit that you have experienced to date!

Check our guide on filling a vape cartridge. You’ll realize that the upgraded filling holes allows oil applicators to smoothly and easily fill without overflow or a sticky mess in the end.  The wide open mouth allows easy filling, even with the thickest oils.

If you are looking for a few cartridges for personal use you can go ahead and buy right now.  If you are looking for a larger number of cartridges for your business or brand we can also work with you in producing the most dependable logo vape cartridges.  Just contact us at our wholesale vape pen page.

Additional information


1 Cartridge, 2 Cartridges, 5 Cartridges, 10 Cartridges


.5ml (.5 gram), 1ml (1 gram)

12 reviews for All Glass Vari-Flow Vape Cartridges I O2V-GCVF

  1. Alan C. (verified owner)

    Best you can buy, stop looking and buy these right now, they slap.

    • Dana E. Shoched

      Thank you Alan! They so good make ya want to slap your Grandma!

  2. Chris A (verified owner)

    These are really great cartridges.

  3. Allen W. (verified owner)

    I already loved the regular all-glass carts. The variable airflow version is a game changer for my D8 extract with 5% terpenes. It draws so easily and creates a lot of vapor and big hits. Get them, it’s a no brainer!!!

    • Dana E. Shoched

      Thank you Allen, glad they are working out so great for you !

  4. Anthony C (verified owner)

    Easily the best cartridges on the market. The all glass carts provide a smooth draw and with the adjustable air flow it makes it even better. The taste is much better than cotton wicks as well. All in all of you don’t have these you’re making a huge mistake.

    • Dana E. Shoched

      Thank you Anthony !

  5. Roger B. (verified owner)

    These carts give good, cool and reliable hits. Best choice of battery is the Vari-Vape 900.

  6. Marinos (verified owner)

    Best carts ever!! Smooth and tasty! Cant get any better than that!

    • Dana E. Shoched

      Thank you so much ! We love them too!

  7. Steve B. (verified owner)

    While I liked the original version, being able to adjust intake air flow makes this cart the best I’ve used. I’m also getting multiple refills per cart. Can’t beat that

    • Dana E. Shoched

      Thank you Steve! Yes, you can not go wrong with either one 🙂

  8. Brian B. (verified owner)

    I’ve had one, .5ml “test-subject” for two weeks now. It has been torture-tested with seven fills/refills in that time-frame, of custom blends of no less than a dozen different distillates, isolates, concentrates and live-resins/terpenes. I offered it no “priming the coil” or break-in period….just filled, vaped and repeated… easily vaped a path through everything I threw at it with ease… quickly switched flavors when I switched terps and without any previous terps residual funkiness.

    To say that I am beyond impressed, is an understatement. TEST = PASSED, and there can be only “One”…..this is IT.

    The all-glass Variflow cartridges, really are THE BEST you can get…..tops in all categories (flavor, reliability, adaptability, quality, ease of filling and use, blah, blah, blah). I will soon be after a stockpile of 1ml and .5ml

    • Dana E. Shoched

      WOW!!! Thanks Brian B. Welcome to the O2 family! Make sure you check out the wholesale discounted pricing on the wholesale tab.

  9. Antonio G. (verified owner)

    Best cart so far so good going too get a another one too thanks

    • Dana E. Shoched

      You are welcome Antonio~

  10. brian (verified owner)

    Simply great… no gooey mess halfway through. hits the same every time and easy to fill.

  11. Eric (verified owner)

    O2vape all glass carts are a game changer for people who are sensitive to metals and industrial oils. The cleanest vaping experience I’ve encountered. The vari-flow ability is really nice, an marked improvement over the prior model. Highly recommended.

  12. Kenneth B. (verified owner)

    Perfect for FSHO!

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