WHAT IS A CARB CAP
A carb cap is a small cover (glass, ceramic, or quartz) placed over a quartz banger after the concentrate is dropped. It restricts airflow into the banger, lowering the vaporization pressure and temperature inside the chamber.
This lets you fully vaporize a dab at lower temperatures (520–540°F instead of 600°F+), preserving terpenes that would burn off at high heat. Without a carb cap, low-temp dabs leave residue in the banger because the puddle cools faster than the airflow can pull through.
Carb caps are essential equipment for proper rosin dabbing. Skipping the cap defeats the purpose of low-temp dabbing.
TYPES OF CARB CAPS
Bubble Caps — Round glass caps with a single airflow port. Simple, universal, fits most bangers. The starter cap. $15–$25.
Directional Caps — Asymmetric airflow port that points to one side. Rotating the cap directs air through the dab puddle, ensuring no concentrate is left in the corners. $20–$40.
Spinner Caps — Used with terp pearls. Carb cap design pushes air against pearls, spinning them. Spinning pearls agitate the dab puddle for even vaporization. $25–$60.
Bubble Spinner Caps — Combination bubble and spinner design. Premium cap format. $30–$60.
WHICH CAP FOR WHICH BANGER
Flat-top banger — Spinner cap with terp pearls. The pearls spin freely on the flat bottom, and the cap directs air to keep them spinning.
Thermal banger — Bubble cap or directional cap. Pearls don’t spin well inside thermal bangers due to the dish shape.
Slurper banger — Specialty slurper cap (designed specifically for slurper geometry). Some slurpers come with a cap included.
Reactor banger — Reactor-specific cap, designed to work with the asymmetric airflow geometry of the banger.
