Screw closure, N 8, PP, black, closed top, Silicone white/PTFE red, 1.3 mm

These screw closures N 8 are suitable to seal 8-425, small (standard) opening screw neck vials. For HPLC analysis closures with slit (702437) or non-slit Silicone/PTFE (70245) liners are quite popular, whereas in GC also Red Rubber/FEP might be a suitable closure. Closed top versions are used for sample storage.