PURPOSE: To obtain a sealing composition for a plasma display panel, having excellent water pressure-resistant strength and compressive strength and excellent lives of a discharge gas and a fluorescent substance.

CONSTITUTION: This sealing composition comprises 60-90wt.% of low-melting glass powder and 10-40wt.% of low thermal expansion ceramic filler. The low- melting glass powder is composed of 77-87wt.% of PbO, 10-20wt.% of B2O3, 2-8wt.% of Al2O3 and 0-3wt.% of SiO2 and contains substantially no alkali component constituted of K2O, Na2O and Li2O. The thermal expansion coefficient at room temperture to 300°C of sealed glass by the sealing composition is (65 to 80)×10-7°C-1.