leaky 904 and woreout old man

I have never considered an type of stop leak product for an auto, ( front seal leaky) but not on my financial plate to have it pulled nor this 70 yr old to pull it either on the dirt.
Is there a good product that can remedy this leak and not do any damage to the trans??
95000 mi 904 behind slant. Trans shifts fine, no rebuild desired anytime,

Not really, as any stop leak type product affects ALL the rubber in the trans, and not just the front seal.
Stop leak swells and softens the rubber by design, and so swells and softens all the piston seals as well.
It might stop the front seal leak for awhile, but it will make it where the entire trans needs all new rubber parts a lot sooner.