NT3076 SEAL. Transmission half shaft oil seal.
Fits to early sliding hub axle shafts on Nuffield Universal tractors.
You will use two seals per half shaft.
Outer diameter: 3 3/4" (95.25mm)
Inner diameter: 3" (76.2 mm)
Depth: 3/8" (9.52 mm)
See item 14 in the illustration.
Fitted to tractors: