The R155-2RS is a high-performance miniature imperial ball bearing engineered for specialized applications requiring a contaminant-free environment within a compact footprint. Featuring dual-sided Nitrile Rubber (2RS) contact seals, this bearing provides an exceptional barrier against dust, moisture, and fine particulates while ensuring excellent grease retention. Designed for 5/32-inch shafts, the R155-2RS is a vital component for high-precision instruments and micro-mechanisms where long-term reliability and zero maintenance are paramount.