Attributes . 13-1/2" Shaft Dia; 15-1/2" Housing Bore; 1-3/8" Nominal Width; Nitrile Lip; Solid Seal; 1-3/8" Actual Width; Spring Loaded; 2 Sealing Lips; Stainless Steel Garter Lip Retainer; Steel Case; HDSD1 Seal Design Code . Names