Patent ID: 8011497

Claim:
A seal chain comprising: outer links each comprising a pair of pins and a pair of outer link plates coupled by said pins; inner links each comprising a pair of bushings and a pair of inner link plates coupled by said bushings, said pins being rotatably inserted through said bushings so as to alternately link said inner links with said outer links; sealing devices each interposed between a respective one of said outer link plates and a respective one of said inner link plates so as to seal lubricant in a respective bearing section formed between each pin and each bushing, a first one of said pair of outer link plates of each of said outer links having a greasing through-hole perforated therethrough so as to communicate with said respective bearing section; and a greasing device attached to said greasing through-hole and configured to supply the lubricant from a side of an outer face of said first one of said pair of said outer link plates to said bearing section.