Caps, Screw Top, with Soft-Guard, White Silicone Rubber / Red PTFE Septa, bonded in "knurled", polypropylene, Yellow Caps. For use with 9-425mm thread, 12x32mm autosampler vials. Soft-Guard Brand. 100/PK
Additional Info:
Soft‑Guard™ septa are engineered to reduce needle resistance while maintaining strong resealing performance, helping improve injection consistency and reduce autosampler downtime.
The 9502S‑E‑10C‑Y Soft‑Guard™ Screw Caps use a specialized silicone formulation that minimizes coring and maintains elasticity over multiple injections. The bonded PTFE/silicone septa provide chemical resistance and protect sample integrity across HPLC, GC, LC‑MS, and GC‑MS workflows.
The yellow polypropylene cap allows for easy color coding and visual identification in the laboratory. A knurled exterior provides secure handling and consistent sealing with standard 9‑425, 12 × 32 mm autosampler vials.
Key Features & Benefits
Easier needle penetration, consistent resealing ✅ Reduces missed injections and downtime
Low coring silicone formulation ✅ Supports repeated injections
PTFE/silicone bonded septa ✅ Chemical resistance and sample protection
Fits 12 × 32 mm autosampler vials ✅ Standard 9‑425 compatibility
Yellow knurled cap ✅ Easy sample identification and handling
Typical Applications
HPLC and UHPLC analysis
LC‑MS and GC‑MS workflows
Pharmaceutical and analytical testing
Routine laboratory applications
Important Notes
For 9‑425, 12 × 32 mm autosampler vials only
Suitable for multiple injections
Bonded septa—no assembly required
Additional Resources
Learn more about Soft‑Guard™ Septa Technology for autosampler performance and resealing efficiency
View Case Quantity 9502S‑E‑10C‑Y Soft‑Guard™ Screw Caps for 9‑425 Autosampler Vials