Caps, Screw Top, with Soft-Guard, White Silicone Rubber / Red PTFE Pre-Slit Septa, bonded in "knurled", polypropylene, Yellow Caps. For use with 9-425mm thread, 12x32mm autosampler vials. Soft-Guard Brand. 1000/CS
Additional Info:
Pre‑slit septa reduce resistance during autosampler needle entry, helping improve injection consistency where smooth penetration is required.
The 9502S‑E‑30C‑Y‑M Soft‑Guard™ Screw Caps combine a pre‑slit silicone/PTFE septum with a low‑coring formulation that maintains elasticity over repeated injections. This supports reliable resealing and helps reduce missed injections, particularly in systems such as Waters® Alliance and Acquity.
Bonded PTFE/silicone septa provide chemical resistance and protect sample integrity across HPLC, GC, LC‑MS, and GC‑MS workflows. The yellow polypropylene cap enables easy visual identification and features a knurled exterior for secure handling with standard 9‑425, 12 × 32 mm autosampler vials.
Key Features & Benefits
Pre‑slit septa ✅ Easier needle penetration
Low coring, consistent resealing ✅ Supports reliable injections
PTFE/silicone bonded septa ✅ Chemical resistance and sample protection
Fits 12 × 32 mm autosampler vials ✅ Standard 9‑425 compatibility
Yellow knurled cap ✅ Easy identification and handling
Typical Applications
HPLC and UHPLC analysis
LC‑MS and GC‑MS workflows
Waters® Alliance and Acquity systems
High‑throughput analytical laboratories
Important Notes
For 9‑425, 12 × 32 mm autosampler vials only
Suitable for multiple injections
Bonded pre‑slit septa—no assembly required
Case quantity format (1000/CS)
Additional Resources