This items is made to order and is not returnable and order cannot be canceled.
CUSTOM ITEM: Caps, Screw Top, with Natural Rubber / TFE Septa, fitted in "knurled", polypropylene, Blue Caps. For use with 9-425mm thread, 12x32mm autosampler vials. MICROSOLV Brand. 100/PK.
Additional Info:
Natural Rubber does not contain siloxanes like Silicone Rubber. TFE is similar to PTFE when comparing inertness.