Blank 24-400 vial cap

This cap is blank design to use as is, or as a canvas to add more designs into. It fits onto the 20ml Pioreactor vial with 24-400 threads.

Printing

Important: only use high-temperature plastics if you plan to heat-sterilize this cap. We use Prusa's Polycarbonate and Polycarbonate-CF

• 3 vertical shell perimeters
• 0.15mm layer height
• Print with the top-side down for best results

Adding an o-ring insert underneath

To avoid leaks, we add a 1/16" W, 3/4" ID, 7/8" OD o-ring underneath. It's secured with some high-temperature silicone. Tip: we put the uncured silicone into a syringe to apply.