Caps, Crimp Top, with White Silicone Rubber / Red PTFE Pre-Slit Septa, Silver Caps, with a 4mm center hole. For use with 8mm Vials. MicroSolv Brand. 100/PK.
These aluminum crimp caps are 8mm in diameter with a 4mm center hole and have a Pre-Slit, Ultra-Clean, fitted silicone rubber and PTFE septum that is 1.3mm thick. Use these caps with 8mm Serum Finish, Crimp Top Autosampler Vials.
These are Pre-Slit to make it easier for the instrument needle to penetrate the septum and offers reduced resistance. It may not reseal as well as other Non-Slit Septa.