Maybe the statement on specifications, stating the seal Phil wanted for those bearings
was submersible pump .. and having it true went off to the Farm
Mr Wood bought when he retired and sold his machine shop ,
to the current owners, who obviously, kept his name on the business..

What is your service situation? stream fording,, ?

get 2 years only, out of those? might go thru the typical UN 'XX' in a winter, then.
but they are cheap, and fast, to replace ..


The mud shield, which I have yet to hold one in my hand,
would not have much seal against the mounting ring splines
Just an O rings on the high spot tips of the spline..
Maybe a bit of bathtub caulk to better seal there, ,
+ the o rings around the spindle pressing around the
edge of the hole..
may shield off ahead of the cartridge..

since Phil BB mounts entirely inside the BB shell ,
the mud rings would come out far enough,
to cover the BB shell face, [presumption]
so maybe that contact is good enough..

***

I had ideas about the leather packing and pump cups,
that were the main product of the company
that took on the making the Selle Anatomica saddles,
In the last few years... about shaft packing around the BB axles

Shaft packing is what goes around the propeller shaft
to keep the Ocean out of the Engine room..

those mud shield things may be useful in that direction.
further O ringed.

Used to be a Zirk kit for loose ball BB's,
it was a thick sleeve between the cups
that you pumped grease in around the axle,
till it came out past the bearings.. with a zirk fitting
for mechanic's grease guns