Graphite One-Piece Ferrules - 0.0625 in - N9307245

Perkin Elmer - Graphite One-Piece Ferrules - 0.0625 in Nut x 0.4 mm I.D., Pkg. 10. Of the three ferrule types available, graphite is the softest, making it less damaging to capillary columns when overtightened. Graphite seals easily and does not stick to