Blue polypropylene short screw-thread cap, 6mm center hole, 9mm diameter, with pre-slit red PTFE/white silicone septa, 100/pk, CV1815 | Tisch Scientific
100 PCS 9mm Caps with Natural PTFE/White Silicone Septa 9-425 Vial MIT Made In T | eBay
CAP-06680 | 28-400 White PP Hole Cap w/ Bonded Septa - Qorpak
WHEATON® PETG Media Bottle Cap, Septum Duo, 38-430 | DWK Life Sciences
Septa Cap – Vinmetrica – Sulfite (SO2), Malic, Alcohol & pH/TA tests for Wine, Beer & Kombucha.
Waters Corp Black, 12 x 32 mm Snap Neck Cap and Preslit PTFE/Silicone Septum, | Fisher Scientific