Solvent Still, High Vacuum Valves

For great solvent/chemical resistance, the two 0-4mm high vacuum valves have Teflon® cover over the two Viton O-rings on the shaft and one integral Teflon® O-rings on the tip, without exposing any material other than Teflon® to any solvents. Syringe port has a 4mm Teflon® stopcock and a 14/20 outer joint. Delivery port has a 14/20 inner joint.