Internal axle seal used with Currie large bearing housing ends and sealed (ball) type axle bearings.
National Seal PN 450067
Front Outer Axle Seal (1 Ton Ball Joint Knuckles)
Spicer Seal PN 50491
Axle Seal for Currie Independent Center Sections with 35-Spline Axles
National Seal PN 474269