18.8 mm Female to 18.8 mm Female Glass Adapter

Make mismatched pieces work together. This straightforward glass adapter converts one 18.8 mm female joint to another 18.8 mm female connection, so you can pair bowls, bangers, ash catchers, or other accessories without buying a new piece.

• Size: 18.8 mm (often called 19 mm) female to 18.8 mm female
• Material: Thick borosilicate glass
• Use: Bridges two 18 mm female joints for bowls, bangers, or adapters
• Profile: Compact, straight-through airflow with reinforced grip ring
• Fit Notes: Check joint sizes before ordering; not compatible with 14 mm or 10 mm fittings

This handy connector adds instant flexibility to your setup. Whether you’re experimenting with a new ash catcher or swapping between herb and concentrate gear, the durable boro build keeps the seal snug and the draw smooth.

• Seat both joints fully before use to protect ground glass surfaces.
• Avoid direct flame contact; let hot glass cool before removal.
• For easy cleaning, soak with a glass-safe cleaner, then rinse with warm water.

Streamline your glass collection with a simple fix—drop this adapter in your kit and make more combos possible.