Caps, Screw Top, with Soft-Guard, White Silicone Rubber / Red PTFE Septa, bonded in "knurled", polypropylene, Purple 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‑P Soft‑Guard™ Screw Caps utilize 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, supporting reliable performance across HPLC, GC, LC‑MS, and GC‑MS applications.
The purple polypropylene cap offers easy visual identification and features a knurled exterior for improved grip and secure handling. Designed for standard 9‑425 thread, 12 × 32 mm autosampler vials, these caps provide dependable fit and repeatable sealing.
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
Purple knurled cap ✅ Easy identification and improved 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‑P Soft‑Guard™ Screw Caps for 9‑425 Autosampler Vials