The 2" Full Color Simple Bubble Carb Cap is a no-frills glass cap for dabbers who want better vapor production without overthinking their setup. At 2 inches (51mm) across, it fits most standard flat-top bangers and provides the airflow restriction you need to vaporize concentrates at lower temperatures. Available in multiple colors, so you can match your rig or just grab whatever catches your eye.
Why a carb cap matters
- Lower temp dabs, fuller flavor — trapping heat lets you vaporize at temperatures that preserve terpenes instead of scorching them
- No wasted concentrate — proper airflow restriction means your material actually vaporizes instead of pooling in the banger
- Simple bubble design — easy to use, easy to clean, no moving parts to break or lose
- Full color glass — solid color throughout, not just surface coating that wears off
- Universal fit — 2-inch diameter works with most standard flat-top quartz bangers
Best for
Dabbers who go through caps regularly and don't want to pay a premium for something that might get dropped, lost, or gifted to a friend. Perfect as a backup cap, a travel cap, or the house cap that everyone uses. If you're the type who keeps extras around for sessions with friends, grab a few in different colors.
How to use it
Drop your concentrate into a heated banger, then place the bubble cap on top. The rounded shape creates a seal while the small hole on top restricts airflow, building up pressure that forces hot air across your concentrate. Spin or tilt the cap slightly to direct airflow and move oil around the banger floor for more even vaporization.
The bubble shape is forgiving — you don't need to worry about directional control like you would with a directional carb cap. Just cap it and inhale. The restricted airflow does most of the work.
For best results, pair with a flat-top banger and take your dabs at lower temperatures. You'll get more flavor and less harshness compared to high-temp dabs without a cap. When you're done, let it cool before wiping off any residue. For deeper cleans, soak in isopropyl alcohol, rinse and dry before reuse.
Specifications
| Attribute | Detail |
|---|---|
| Diameter | 2 inches (51mm) |
| Material | Full color glass |
| Style | Simple bubble |
| Compatibility | Most standard flat-top bangers |
| Colors | Multiple available |
Fit and compatibility
This cap works with most flat-top quartz bangers in the 20-25mm range. It's designed to sit on top and create a seal through the bubble shape rather than fitting inside the banger. Won't work well with beveled-edge bangers or those with narrow openings. If your banger has a 25mm+ opening, this should cap it fine.
Frequently asked questions
Will this fit my banger?
If you have a standard flat-top banger with an opening around 20-25mm, yes. The 2-inch bubble sits on top and seals through contact rather than fitting inside. Measure your banger opening if you're unsure.
What's the difference between this and a directional cap?
Directional caps have angled airflow holes that let you push oil around the banger deliberately. This bubble cap has a simple top hole — it restricts airflow and traps heat, but doesn't give you precise directional control. For most casual dabbers, the bubble style works great without the extra technique.
Is full color glass stronger than regular clear glass?
Full color means the color runs through the entire glass, not just a coating on the surface. It's the same durability as any borosilicate glass — won't chip or fade, but still breakable if dropped on a hard surface.
Can I use this with a terp slurper or spinner banger?
Not ideal. Terp slurpers need specific caps designed for their airflow system, and spinner bangers need caps with angled holes to spin the pearls. This bubble cap is best for standard flat-tops.
How do I clean it?
Let it cool completely, then wipe off any residue. For sticky buildup, soak in isopropyl alcohol for a few minutes, then rinse with warm water and let it dry before your next session.
Can I pick my color?
Multiple colors are available. Add a note with your order for color preference and we'll do our best to accommodate based on current stock.
Why use a carb cap at all?
Without a cap, your banger loses heat quickly and much of your concentrate just pools without fully vaporizing. According to Leafly's dabbing guide, capping allows for lower-temperature dabs that preserve more terpenes and produce smoother, more flavorful vapor. It's one of the cheapest upgrades that makes the biggest difference in your dab experience.