Help ID steering column parts

[1967chevy-1]

Can anyone help me identify and hopefully locate the two plastic washers inside the upper steering column in my 1967 C10? Does anyone know the correct names of these two washers?
They are shoulder washers, by that I mean they are not flat, but have a flat side attached to a round side and are all one piece. They go above the shifter section and below the turn signal section inside the steering column.
My washers are broken and need to be replaced. It would be great to locate a vendor or store where I could pick up two new ones for my column rebuild.

Any help will be great,
Guy