CMP Fender to body joins

[Bruce Parker (RIP)]

I'm forming an opinion (though welcome to be rebutted) that early CMPs used a civilian rubber seal, flat with a round outer that was soon replaced with a similar product made of canvas impregnated with 'tar'. What is certain is that a flat example of the tar impregnated burlap/canvas was used as a roof gasket at least on CMP HUPs. Distant memory perhaps, but on my 1944 HUW I wonder if the fender bead was replace with the flat seal. I think I would have noticed a bead and recorded it when taking them off.

[Jordan Baker]

When I took my C15a apart the body joints all had flat woven seal. There was no bead nor did it ever appear to have had a bead. I found that Mac’s Antique Auto sold the same type of seal.

[Jacques Reed]

Good Day,

Here are two close up photos of some original fender welting from my 1943 F-15A.
As discussed it has the cord sewed into the webbing material which I believe was impregnated with and anti-rust agent, Cosmoline perhaps?

I obtained a vinyl repro in Australia from Old Auto Rubber Co. They list it as mudguard piping in their catalogue. It is similar to what is shown in Owens UK link. The layers of paint on the original make it look almost plastic, so once covered in paint the new material will look very similar. See attached

Cheers,