Part Number: 23742 (also labeled as 23742-CR or SKF 23742)Inside Diameter (Shaft Size): 2.375 inches (2-3/8")Outside Diameter (Bore Size): 3.371 inches (some specs list up to 3.376")Width: 0.438 inches (7/16")Design Type: CRWH1 (Features a double steel case, carbon steel garter spring, and a specialized SKF WAVE lip)Material: Nitrile Rubber (NBR) lipTemperature Range: -40°F to 212°F (-40°C to 100°C)Outer Coating: Bore Tite Coating (a green sealant coating that helps fill minor imperfections in the housing bore)