The MR115-2RS is a robust single-row miniature ball bearing engineered specifically for high-performance applications where exposure to external contaminants is a constant challenge. Outfitted with dual synthetic rubber contact seals (2RS), this 5×11×4 mm component provides a formidable barrier against moisture, fine grit, and liquid splashes. Unlike shielded versions, the reinforced rubber seals maintain a light-contact interface with the inner ring, ensuring that the internal factory-grade lubricant remains securely sealed within the raceways, significantly extending the service life of the bearing in outdoor or non-sterile environments.