National — 504000

Rotary shaft seal; Type: Special; Material: Mill Right Nitrile; Shaft Diameter: 1-3/4 in; Housing Diameter: 2-1/4 in; Thickness: 5/16 in; Shore Hardness: 80 A; Fluids: ISO HM32 oil; Temperature Range: -40 - 121 °C; Maximum Pressure: 10 PSI; Type: Single Lip, without metal housing, with spring; Other approved brands: CR (Chicago Rawhide) 17230; RIRSA 17230. General use: Cranes, Steel Mills