0.4mm Id Graphite Ferrule For Thermo Finnigan (M8 Nut) (10/Pk)

Details:

100% Graphite ferrule; upper temperature limit 450°c. Soft; graphite is recommended for use with fused silica and glass. Reusable if not overtightened. One piece design requires no back ferrule,packaged: 3" x 3" x 1/4" plastic dial pack; weight 7.25 G.