1.125" ID X 2.125" OD X .313" OIL SEAL

Buna-N/Nitrile/NBR oil seal, item OS-1125-2125-0313-SB-H, for rotary shaft sealing, oil retention, grease retention, and bearing protection in industrial equipment. This rotary shaft seal is described as metal OD, single lip, with spring based on the available attributes, giving customers a clear view of the lip design, spring detail, and outside-diameter construction when those details are available. The actual dimensions are 1.125 inch (28.58 mm) ID x 2.125 inch (53.98 mm) OD x 0.313 inch (8 mm) cross-section/height, making the part easier to compare against shaft size, housing bore, and seal width requirements. Oil seals are commonly used on gearboxes, motors, pumps, rollers, gear reducers, and rotating assemblies where lubricant must stay inside the housing while dirt, moisture, and debris are kept out. Buna-N/NBR is widely used for rotary sealing where compatibility with many oils and greases is required. The wording naturally supports product searches for oil seal, rotary shaft seal, nitrile oil seal, FKM oil seal, rubber covered OD seal, single lip oil seal, and double lip oil seal as applicable. Item OS-1125-2125-0313-SB-H is included for SKU-level identification in equipment records, drawings, maintenance lists, and reseller product catalogs.