Snap Cap Closures, 11mm Snap-It™ - Blue - Clear PTFE/Red Rubber - NSC C4011-61

Thermo Scientific™ National Scientific Brand Pre-assembled caps and septa are convenient and minimize contamination from handling. Storage cap has a solid top and pre-inserted PTFE disk liner. Soft durometer Silicone is suitable for Japanese autosamplers with fragile needles. Pre-slit septum allows for pressure equalization during sample withdrawal. Highly resealable even after multiple punctures. Highly resealable even after multiple punctures. Bonded PTFE disk will not dislodge during injection, High resistance to chemical attack, Not resealable, Compatible with many LC applications. For use with aggressive solvents, Sandwich septum resists coring.