CUSTOM ITEM: Caps, Screw Top, with Silicone Rubber / PTFE, low durometer Septa, bonded in "knurled", polypropylene, Red Caps. For use with 9-425mm thread, 12x32mm autosampler vials. MICROSOLV Brand. BULK PRICING.
Additional Info:
Low durometer septa are formulated to provide softer penetration characteristics, helping reduce needle stress and improve injection consistency.
The 9502S‑10C‑R screw caps feature bonded silicone/PTFE septa with reduced hardness to support easier needle entry while maintaining sealing performance. The bonded design prevents septa displacement, helping eliminate “septa push‑through” (plunge) and reducing the risk of liners falling into vials or becoming dislodged during shipping and handling.
These caps provide a practical alternative to higher-cost certified brands while maintaining reliable performance in routine HPLC and GC applications. 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
Low durometer septa ✅ Easier needle penetration, reduced stress
Bonded septa design ✅ Prevents septa plunge and dislodging
Silicone/PTFE construction ✅ Chemical resistance and sealing performance
Fits 12 × 32 mm autosampler vials ✅ Standard 9‑425 compatibility
Red knurled cap ✅ Easy handling and identification
Typical Applications
HPLC and UHPLC analysis
GC workflows
Routine analytical laboratories
Cost-sensitive testing environments
Important Notes
For 9‑425, 12 × 32 mm autosampler vials only
Suitable for multiple injections
Bonded septa—no assembly required
Alternative to higher-cost certified cap options
This and other custom items are Custom Ordered and require quotation
Additional Resources
Custom Item Pricing Information