Our Gas-Tight Tube Caps are ideal for experiments that require an air-tight environment under vacuum or low pressure less than 1 bar. Use with our Medium-Walled and Heavy-Walled NMR tubes for better seal and robustness in variable temperature experiments. Serum Caps allow easy access via syringe needle.
Fits Tube with OD:
3 mm and 4 mm
100 per pack
3 And 4 Mm Red Rubber Septa, Precision 100/pk - WG-3890-100 - Lab Supplies Caps & Closures Septa & Discs
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