This component provides non-contacting sealing for SNS-type bearing housing, working on the labyrinth principle rather than lip contact. The outside diameter is 274.4 mm and the width is 42.0 mm, values that define the mating dimensions against the housing bore and shoulder. Net mass is 3.153 kg. Because the seal operates without contact, there is no friction-generated heat and no wear-related clearance loss over time, which keeps the seal effective across the full service life of the housing. The non-contacting labyrinth design also tolerates minor shaft misalignment and allows grease to pass through the gap during relubrication without being wiped off, so it suits installations where regreasing of the bearing housing is performed on a scheduled basis. The symbol NTS52 identifies the exact labyrinth ring for assembly with its matching SNS housing bore diameter.