Engineered for harsh operating environments that demand maximum sealing integrity alongside high load capacities, the 6317-2RS is a premier heavy-duty deep groove ball bearing. Outfitted with dual synthetic rubber contact seals (2RS), it provides a complete barrier against fine dust, moisture, and aggressive contaminants while ensuring zero leakage of internal lubricants. Because these heavy-duty seals create a secure lip-contact with the inner ring, the 6317-2RS delivers unmatched protection and durability, making it the top selection for large-bore (85mm) applications like high-vibration electric motors, rugged agricultural machinery, and heavy industrial drives.