Abstract: A track roller for a ground-engaging track system includes a roller rim defining a roller axis and including a first seal bore formed in a first axial end and a second seal bore formed in a second axial end. A roller shaft extends through the first seal bore and the second seal bore, and may include a straight shaft having an uninterrupted cylindrical outer surface. A first seal assembly includes a first outer seal carrier interference-fitted within the first seal bore, and a second seal assembly includes a second outer seal carrier interference-fitted within the second seal bore. The first seal assembly and the second seal assembly include a first face seal and a second face seal, respectively, each including an outer seal ring and an outer seal element, and an inner seal ring and an inner seal element, where each outer seal element is radially inward of the respective outer seal ring and squeezed in radial compression to form a fluid seal with the respective outer seal carrier.