CRT frit capable of sealing a CRT bulb at a relatively low temperature and in a short time

A CRT frit for use in sealing a panel and a funnel of a CRT bulb which comprises non-crystallizing glass powder and a refractory filler powder, said non-crystallizing glass powder consisting essentially of, by weight percent, 75-90% PbO, 11.5-20% B2O3, 0-8% ZnO, 0-5% SiO2, and 0.1-5% Fe2O3.

A CRT frit for use in sealing a panel and a funnel of a CRT bulb and which comprises non-crystallizing glass powder and refractory filler powder, wherein the mixing ratio of said non-crystallizing glass powder and said refractory filler powder is within a range between 95:5 and 55:45 in weight ratio, the coefficient of thermal expansion at a temperature between 30 and 250° C. being within a range between 80 and 90×10−7/° C., said non-crystallizing glass powder consisting essentially of, by weight, 76-90% PbO, 11.5-18% B2O3, 0-5% ZnO, 0.1-2.5% SiO2, and 0.1-3% Al2O3, said refractory filler powder comprising alumina powder.

A CRT frit for use in sealing a panel and a funnel of a CRT bulb and which comprises non-crystallizing glass powder and refractory filler powder, wherein the mixing ratio of said non-crystallizing glass powder and said refractory filler powder is within a range between 95:5 and 55:45 in weight ratio, the coefficient of thermal expansion at a temperature between 30 and 250° C. being within a range between 80 and 90×10−7/° C., said non-crystallizing glass powder consisting essentially of, by weight, 75-90% PbO, 11.5-20% B2O3, 0-8% ZnO, 0-5% SiO2, and 0.1-5% Fe2O3, said refractory filler powder comprising alumina powder.