| 摘要 |
A seal assembly has simple assembly structures, and provides secure sealing effects. A crawler-track connection structure allows the seal assembly to be easily mounted, and securely prevents overflow of a lubricant and the like to the outside. A pair of seal rings ( 1 ) and ( 1 ) individually having lip portions ( 23 ) and ( 23 ) are disposed such that each of the lip portions ( 23 ) and ( 23 ) protrudes in a direction opposing an axial direction, and a load seal ring ( 2 ) is compressed and inserted between the pair of seal rings ( 1 ) and ( 1 ). The load seal ring ( 2 ) exerts reaction forces on the pair of lip portions ( 23 ) and ( 23 ) outwardly in the axial direction.
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