Combine elastomeric sealing of silicone with nonreactive PTFE reagent contact surfaces in these septum closures for media bottles.
Combine the elastomeric sealing of silicone with nonreactive polytetrafluoroethylene reagent contact surfaces in Thermo Scientific™ Nalgene™ Septum Closures, for use with Nalgene™ Sterile PET & PETG media bottles.