Patent ID: 8602931

Claim:
A seal chain, comprising: inner and outer links articulably connected to one another in alternating relationship; wherein each of said inner links comprises a pair of inner plates in laterally spaced relationship to each other and a pair of bushings press fit into bushing holes in said inner plates and protruding therefrom; wherein each of said outer links comprises a pair of outer plates in laterally spaced relationship to each other and a pair of connecting pins press fit into pin holes in said outer plates; wherein the plates of each outer link overlap the plates of each inner link, and each of the pins of each outer link extend rotatably through a bushing of an adjacent inner link; the seal chain also comprising: seal mechanisms disposed between overlapping parts of said inner and outer plates; wherein each said seal mechanism comprises a first seal member in contact with an outer side of an inner plate and a second seal member in contact with an inner surface of an outer plate facing said inner plate; wherein said first seal member comprises a pair of annular lips; wherein said second seal member has a surface in sliding contact with said pair of lips; wherein said first seal member has annular grooves on a surface thereof in contact with said inner plate and said second seal member has annular grooves on a surface thereof in contacting with said outer plate, wherein a charge of lubricant is provided in each of said annular grooves, and wherein said first seal member is adhered to an outer surface of said inner plate and said second seal member is adhered to an inner surface of said outer plate.