Link assembly and seal assembly

A link assembly provided with crawler belt links mutually coupled so as to be rotatable around a rotating shaft, the link assembly comprising:

• a first member;
• a second member opposing the first member and being rotatable around the rotating shaft;
• a seal housing formed between the first member and the second member;
• and
• a seal assembly disposed inside the seal housing,
• the seal assembly having a seal ring and a load ring,
• the seal ring having a support ring and a lip ring, and the seal ring being disposed between the first member and the load ring,
• the load ring being disposed between the seal ring and the second member, and
• the lip ring abutting the load ring, and the lip ring having
• a first lip part that abuts the first member and protrudes in an axial direction of the rotating shaft, and
• a second lip part that abuts the second member and protrudes in a radial direction perpendicular to the rotating shaft.