A new old stock  oil seal PAYEN reference D255 with various applications including Timing Case seal, Transfer Case seal and others.

Engine types and vehicles include BUDA H Series, GMC 40-42 CATERPILLAR D M R 34-48 CHEVROLET C15A 8A C30 and FORD Military.

Please see last 2 photos from an old Payen catalogue for list of fitments. The only vehicles not listed there are Ford Military 1940-44 Transfer Case Seal which is listed on the box but not in the catalogue.

Sizes are not listed on the box or catalogue but are approximately 3" outer 2" inner and 1/2" wide