...................Yes there was/is leather seals in 741 and742 cases from 1957 to 1968.........chicago rawhide made them............i've changed a few dozen............kim..........
They don't make replacements out of leather nowdays do they Kim? I have only bought Timken's and another brand (drawing a blank on the other brand) and they sure don't look like leather unless they'lve got some odd way of processing it to make it look like neoprene...