The R188-2RS is a precision sealed miniature ball bearing featuring inch-dimensional specifications, engineered for mechanisms requiring enhanced protection against moisture and fine contaminants. Featuring double contact rubber seals (2RS), this miniature bearing provides superior defense against liquid ingress and particulate contamination while retaining lubricating grease in space-constrained assemblies. With a 6.35mm bore (1/4 inch), 12.7mm outer diameter (1/2 inch), and 4.763mm width (3/16 inch), it serves as the ideal solution for food processing equipment, medical devices, laboratory instruments, and outdoor RC applications where exposure to moisture or washdown procedures is common.