CUSTOM ITEM: Caps, Screw Top, with Orange Red Rubber / PTFE Septa, bonded in "knurled", polypropylene, Red Caps. For use with 9-425mm thread, 12x32mm autosampler vials. MICROSOLV Brand. BULK PRICING..
Additional Info:
Alternative septa materials are often selected to balance cost, penetration softness, and instrument protection in routine analytical workflows.
The 9502S‑40C‑R screw caps feature bonded orange‑red rubber/PTFE septa that offer a more economical option compared to white silicone, while providing a softer penetration surface than natural red rubber. This helps minimize stress on autosampler needles and injection components, supporting longer instrument life and improved workflow consistency.
The bonded septa design prevents dislodging during transport and use. The red polypropylene cap includes a knurled exterior for secure handling and consistent sealing with standard 9‑425, 12 × 32 mm autosampler vials.
Key Features & Benefits
Orange‑red rubber septa ✅ Economical alternative to white silicone
Softer than natural red rubber ✅ Reduces needle and system wear
PTFE barrier ✅ Chemical resistance and sample protection
Bonded septa ✅ Prevents dislodging and improves reliability
Fits 12 × 32 mm autosampler vials ✅ Standard 9‑425 compatibility
Typical Applications
HPLC and UHPLC analysis
GC and LC‑MS workflows
Cost-sensitive laboratory environments
Routine analytical testing
Important Notes
For 9‑425, 12 × 32 mm autosampler vials only
Suitable for multiple injections
Designed for economical and instrument-friendly performance
This and other custom items are Custom Ordered and require quotation
Additional Resources
Custom Item Pricing Information