CUSTOM ITEM: Caps, Snap Top, with Red Rubber / PTFE Septa, fitted in smooth, polyethylene, Yellow Caps. For use with 11mm, 12x32mm Snap Top autosampler vials. MICROSOLV Brand. BULK PRICING.

Additional Info:

Snap caps provide a fast, press‑fit sealing solution that simplifies vial preparation while maintaining consistent autosampler performance. The red rubber / PTFE septa construction offers dependable sealing while avoiding silicone materials in the septa.

The 9502C‑40CY Snap Caps are often selected by laboratories that prefer to eliminate silicone from analytical workflows to reduce potential interference or compatibility concerns. The PTFE layer provides chemical resistance, while the red rubber backing supports effective sealing for routine applications.

This configuration offers a cost‑effective alternative to silicone‑based septa, making it suitable for high‑volume laboratories. The yellow polyethylene cap supports clear identification and efficient color‑coding in organized HPLC and LC‑MS workflows.


Key Features & Benefits

  • Red rubber/PTFE septa ✅ Silicone-free alternative

  • Cost-effective design ✅ Ideal for high-volume use

  • PTFE barrier ✅ Chemical resistance and sample protection

  • Reliable sealing ✅ Suitable for routine workflows

  • Snap-top closure ✅ Fast, press-fit sealing without threading

  • Yellow cap format ✅ Supports identification and workflow organization


Typical Applications

  • HPLC and UHPLC analysis

  • LC‑MS workflows

  • Silicone-sensitive methods

  • High-throughput analytical laboratories


Important Notes

  • For 11 mm, 12 × 32 mm snap top autosampler vials only

  • Suitable for routine analytical applications

  • Designed for labs avoiding silicone-based septa

  • This and other custom items are Custom Ordered and require quotation


Additional Resources


Custom Item Pricing Information


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