Abstract: An annular gasket has a seal material (2) disposed on an unwoven cloth (1) capable of preventing lateral flow so as not to reduce compressive stress by disposing the seal material (2) annularly on the unwoven cloth (1) using the thin and soft unwoven cloth (1) as a core material. The seal material (2) is disposed annularly on the front and rear surfaces of the unwoven cloth (1), whereby the shape of a sealing member can be maintained, seal performance can be increased, and cost and size can be reduced.

Abstract: An annular gasket having a seal material (2) disposed on an unwoven cloth (1) capable of preventing a lateral flow so as not to reduce a compressive stress by disposing the seal material (2) annularly on the unwoven cloth (1) using the thin and soft unwoven cloth (1) as a core material, wherein the seal material (2) is disposed annularly on the front and rear surfaces of the unwoven cloth (1), whereby the shape of a sealing member can be maintained, a seal performance can be increased, and a cost and size can be reduced.