silver aluminum seal (with 5.6 mm center hole), red PTFE/white silicone septum, septum diam. × thickness 11 mm × 1.3 mm, pkg of 100 ea. Expand. Hide. SU860095. gold seal, magnetic (with 5mm center hole), red PTFE/silicone/red PTFE septum, septum diam. × thickness 11 mm × 1.0 mm, for use with CTC PAL and TriPlus autosamplers, pkg of 100 ea.