0.5 mm ID Graphite Ferrule for ThermoFinnigan (M8 Nut) (10/pk)

100% graphite ferrule; upper temperature limit 450 deg. 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 in. x 3 in. x 1/4 in. Plastic Dial Pack; Weight: 8.5 g.