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. 100/PK.
The Septa is bonded to the cap for increased performance of penetration that prevents "septa plunge" and prevents them from falling out or dislodging in the cap during transportation..
Very popular and useful for HPLC or GC; save money compared to "Certified" brands. Click HERE for case quantities.