Not Bob Ford's crack style, Rear lens repair, not crack Options

[porbmw]

This HAS to be a common problem....or am I the only one with more than one of these.

Actually, have a pair of NOS rear lenses I got a few years ago....were shipped to me, and likely damaged during shipment. Vendor had little to say about that.

Lens has "split" at the seam, at the point where the two colors of plastic are melded. Almost perfectly clean split/breadk...

How does one repair these lenses. I am assuming these were melted/melded at the Hella factory. Now I am assuming glue is the last resort.

Is it?
If so, what is the best glue....and process....and any trick on keeping the glue from smearing on the outside of the lens.

And what glue will apply transparent, and remain transparent with age.

Of course, I have some other, olders ones that also are split....

and have been glued, with glue visible on outside of lens....any trick to removing and applying something that hides the repair

Thanks