Valve, NMR Tube, Viton O-Rings, Complete with Glass Body, TFE Plug and Control Knob, each

Valve, NMR Tube, Viton O-Rings, Complete with Glass Body, TFE Plug and Control Knob. Valve only is designed to be sealed to the top of either 5 or 10mm O.D. NMR tubes. Upper portion of the stem is extended with an additional o-ring for attachment to a piece of 7mm I.D. Tubing which in turn can be sealed to any number of standard taper joints. This feature allows for a sample to be dispensed directly from a vacuum line port into the NMR tube. Valve is symmetrically balanced and has Viton O-rings on both the barrel and top stem seal. Valve is tooled on 9mm O.D. standard wall Tubing. Complete valve consists of a glass body, TFE plug with two O-rings and Delrin-AF control knob. Plug has three O-rings, (2) #007 and (1) #008. NOTE: NMR TUBES MUST BE PURCHASED SEPARATELY. Made in the United States.