GPI Thread Finish: 8-425Shell Material: PhenolicLiner Material: Teflon (PTFE)Cap Color: Black Magnakoys Blue 8-425 Teflon (PTFE) Lined continuous Thread Black Screw Closure Caps. Cap your 1/2 Dram vials with the perfect closure. It is essential to determine the appropriate closure for your application. See our images to determine what size cap you need for your vials or bottles.
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