If you do a Google search for
“Vhgmc land master manual”
you will find a link to the manual to download.

I tried to look for this manual on the website but could not find it but Google did.

If this is the model you have the manual shows this oil seal as a “OilseaI13P/13708725”

Another Google search of this oil seal part lists the companies that supply this part with the dimensions of
Od 1 3/8
Id 7/8
W 1/4
Please measure the oil seals on your machine and confirm back here these are the correct size seals for future reference for anyone else looking for this information.
Thank you.
Pete