Joint-Screw-NPT-PTFE/PEEK High-class Vacuum Stirrer Guide, with ASTM/DIN Glass Cone Joint, for Φ8~16mm ShaftIdeal for Middle/Low-Vacuum, 500/800rpm, Chemically Inert, -200℃+280℃ Stable, , 고품질 진공 교반 씰 (SL21CAT00003358)