Shaft Seal, PS-3874, 1 Shaft, Viton PS-360, US Seal Mfg. Product Specifications: Shaft Seal Head Type: A Pump Manufacturer: Pentair Pump Model: C Series, EQ Series Quality/Material: Better - Viton Carbon Graphite Shaft Size: 1 Seal Outside Diameter: 1-13/16dia Seal Height: 1 Mating Ring Diameter: 1-7/8dia Mating Ring Thickness: 7/16 US Seal Basic Equivalent: PS-360