Patent ID: 6951373

Claim:
A crawler belt having endlessly connected right and left track links each formed with an outer link portion and an inner link portion at opposite longitudinal ends thereof, respectively, bushes located transversely between inner link portions of said track links and having opposite axial ends in face to face relation with said outer link portions, connecting pins placed in said bushes and having opposite axial end portions fitted in and connected to said outer link portions, and a seal fitted around an outer periphery of each one of said connecting pins and between an outer link portion of said track links and an opposing end of said bush, wherein: said seal is comprised of an outer lip portion provided on the side of said track link and held in abutting engagement with an inner end face of said outer link portion, an inner lip portion provided on the side of said bush and held in abutting engagement with an end face of said bush, and an interconnecting bridge portion of V-shape in cross-section interconnecting said outer and inner lip portions integrally with each other; said interconnecting bridge portion of V-shape in comprised of an outer bridge portion obliquely connected to an inner peripheral end of said outer lip portion on the side of said track link, and an inner bridge portion obliquely connected to an inner peripheral end of said inner lip portion on the side of said bush; said inner bridge portion has a thickness at its thinnest portion that is of a greater thickness than a thickness of said outer bridge portion at its thinnest portion; said inner lip portion has a thickness which is substantially the same as said thickness of said inner bridge portion; said outer lip portion has a thickness which is substantially the same as said thickness of said outer bridge portion; and a maximum outside diameter portion in a boundary region between said outer bridge portion and said inner bridge portion of said interconnecting bridge portion is located radially outward of a median position between inner and outer peripheral ends of said inner lip portion on the side of said bush.