Kram, that would be a possibility but a $1.00 rubber boot will do just fine.
BJThomp, yes I did see that but without going back to the site , I vaguely recall the price is at $13. Each plus shipping.
Rubber bellows cost 1-3$ here , and at other sites. See examples. I didn’t have originals so I don’t know the shaft diameter, length and the OD. I’ll find them soon at a better price point.
Dakazman