Reed Switch Glass Tubing is precision-cut glass specially made for hermetic encapsulation of reed switches. Outer diameters range from approximately 1 mm to over 5 mm, with custom dimensions available. Its high iron content creates a green or blue-green tint, offering strong infrared absorption and favourable ultraviolet transmittance. The tubing hermetically seals reed contacts under inert gas, isolating contacts from atmospheric contaminants to minimise oxidation and carbonisation during switching and extend service life. The reed elements inside deliver fast switching performance, operating 5 to 10 times quicker than conventional electromagnetic relays.