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13mm threaded cap and septum: black PP sealing cap with PTFE/silicone septum

Thread: 13mm
Opening: 8.5mm center hole or closed top
Key Models:

SC131131: Pre-opened white PTFE/red silicone

SC134132: Closed top natural PTFE/silicone

SC133131: Three-layer PTFE protection

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Content

Inert barrier – PTFE contact layer ensures zero sample interaction
VOC protection – closed top option (SC134132) eliminates evaporation
High flow rate – 8.5mm center hole fits large syringes
Pre-opening efficiency – pre-opening septum (SC131131) reduces needle plugging by 90%
Universal fit – compatible with all 13mm ND13 vials

Black PP threaded cap with white PTFE/red silicone septum, suitable for 13mm sample bottle, 8.5mm center hole
Corrosion-resistant seal: Multi-layer PTFE/silicone septa prevent sample adsorption in strong solvents.
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