Raj Analytical Services supplies 40% Graphite / 60% Vespel Ferrules. Raj Analytical Services offers chromatography items and accessories. 40% Graphite / 60% Vespel Ferrules are designed with one piece which requires no back ferrule. 40% Graphite / 60% Vespel Ferrules have 100 % high point DuPont polyimide. It is recommended for GC / MC applications. This can be reused and does seize on to column. The upper limit temperature of this vespel ferrule is 400 degree centigrade.
