. PTFE/Silicone vial septa are available with a slit which provides a secure seal and also allows for easy penetration of the autosampler needle.. For use with most organic solvents. Even though the PTFE is pierced, septa will still have the silicone
Assembled screw cap with hole with PTFE/silicone septum black polypropylene cap, thread for 24-400, PTFE/silicone, septum thickness 3 mm, for use with 20, 40, or 60 mL vial, pkg of 100 ea
Assembled screw cap with hole with PTFE/silicone septum black polypropylene hole cap, thread for 8-425, PTFE/silicone, septum thickness 1.5 mm, for use with 2 mL vial (standard opening), pkg of 100 ea
Assembled screw cap with hole with PTFE/silicone septum black polypropylene hole cap, thread for 15-425, PTFE/silicone, septum thickness 1.5 mm, for use with 7 mL vial, pkg of 100 ea