Screw cap ND18, silver, closed, Sil/PTFE, pk/100 Back Catalog number: 18 03 1666 Availability: In the manufacturer's stock Price on request - + Recommended 702834 N20 bimetal cap,blue/silver, blue SIL/PTFE, pk/100 48,62 € 31020SP-2346 10mL SPME Clear Radius Bottom Vial, 23x46mm, 20mm 51,92 € 702829 PR N20-H, si, But lgr/PTFE dgr, 50°, 3.0 31,03 €