SEALING DEVICE

摘要

A sealing device where a seal lip (25) of a first seal ring (20) integrally formed with an installation ring (10) from a rubber-like elastic material is made to be slideably in intimate contact with a second seal ring (30) on the inner periphery side of the lip. Degradation in sealing ability of the device caused by reversing of the lip (25) when the second seal ring (30) is installed is prevented, parting of the first seal ring (20) from a mold after molding is facilitated, and the degree of freedom of setting the thickness of the seal lip (25) is increased. To achieve this, the sealing device has the first seal ring (20) integrally formed with the installation ring (10) from a rubber-like elastic material and also has the second seal ring (30) combined with the first seal ring (20), the first seal ring (20) has the seal lip (25) formed projecting outward from the tip (11a) of a tube section (11) of the installation ring (10), and the seal lip (25) is made to be slideably in intimate contact with the outer peripheral surface of the second seal ring (30), with the seal lip (25) reversed toward the inner periphery of the tube section (11) by insertion of the second seal ring (30).