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DWK Life Sciences MicroLiter 20mm Crimp Top Headspace Vial Septas and Stoppers

Butyl stoppers can be used when PTFE is not required. Butyl/PTFE septa are an economical choice with low background peaks.

Manufacturer:  DWK Life Sciences 200020B

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Catalog No. 15-111-644

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Molded PTFE/butyl septa offer the tightest seal of all PTFE items, as well as low background peaks. PTFE/silicone septa are excellent for volatiles. Aluminum/silicone septa are also excellent for volatiles, but not suitable for repeat injections.


20 mm Septa
20 mm
20 mm Headspace Seals - MicroLiter
Butyl, bulk
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