The R12-2RS is a robust, inch-dimensional single-row deep groove ball bearing engineered to deliver unyielding performance in challenging environments. Featuring a 3/4-inch inner diameter, this bearing is fortified with dual NBR (Nitrile Butadiene Rubber) contact seals. Unlike metal shields, these rubber seals make physical contact with the inner ring, creating a highly effective barrier that completely blocks out heavy dust, moisture, and particulate contamination while locking in the factory-applied lubrication. This makes the R12-2RS an essential component for machinery exposed to harsh outdoor elements or demanding industrial conditions where maintenance access is limited.