Short Thread Cap, 9mm, Open Transparent Polypropylene, Red Rubber/PTFE Septa; 1000/pk

No more damaged autosampler needles or sample loss|Ensure septa is not deformed due to overtightening and extend the life of your needle Prevent sample evaporation due to poor vial-septa-cap sealing UltraClean? high-purity septa are optimized for GC and headspace analysis Select caps with UltraBond?? septum to avoid sample contamination|Red rubber/PTFE septa has improved level of cleanliness compared to natural rubber|PTFE coating ensures optimal chemical compatibility|Designed with a transparent open cap with red rubber and beige PTFE septa|Short thread polypropylene caps fit short thread vials. Caps are available in different colors, septum materials, and open or closed configurations to suit your application. UltraBond cap and septum form a one-piece unit with a bonding process without adhesives for contamination-free results. Pre-slit septa prevent a vacuum forming inside the vial.