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18mm Open Top Magnetic with 0.050" PTFE/Translucent Blue Silicone Septa Screw Cap, 100/pk — Sciencix
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Blue polypropylene snap-top cap, 6mm center hole, 11mm diameter, with pre-slit blue PTFE/white silicone septa, 100/pk, CV1901 | Tisch Scientific
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CG-4910 - SCREW CAPS, OPEN TOP, WITH PTFE FACED SILICONE SEPTA, LAB-PAC, SEPTUM- Chemglass Life Sciences
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Autosampler Vials Cap,9mm Blue Polypropylene Screw-Thread Caps with PTFE Red/Silicone White Septa by Biomed Scientific: Amazon.com: Industrial & Scientific
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