Built specifically to withstand harsh operational conditions, the R18-2RS is a rugged, inch-series deep groove ball bearing. Fitted with dual nitrile rubber (NBR) contact seals on both sides (2RS), this component effectively blocks water, mud, and fine dust while securely retaining its factory-filled grease. Because these heavy-duty seals make direct physical contact with the inner ring, they provide superior ingress protection compared to metal-shielded counterparts, making the R18-2RS an exceptional choice for 1.125-inch bore assemblies like lawnmower spindles, medium-sized electric motors, and material handling conveyors.