Material for Ranch Wagon upper control arm splash guards

[51504bat]

Don't know the correct term but I'm looking for ideas of what type of material I can use to replace the brittle rubber like material on the upper control arm splash guards on my '54 Ranch Wagon. I thought about using an old inner tube but it isn't thick or stiff enough. I don't think heavy card board would be flexible enough. Looks to be just over an 1/8th of a inch (0.133) Any suggestions are greatly appreciated.

 

[alt63bird]

Masticated tire casing or cotton-reinforced rubber sheet (?). Try Steele Rubber or a local rubber supply house.

 

[51504bat]

Masticated tire casing or cotton-reinforced rubber sheet (?). Try Steele Rubber or a local rubber supply house.

Found this stuff on Amazon. Not quite as thick but it sounds like it might work and its returnable.
Rubber Sheet Warehouse .125" (1/8") Thick x 12" Wide x 36"+/-1" Neoprene Rubber Sheet Commercial Grade 65A, Smooth Finish, Solid Rubber, Perfect for Weather Stripping, Gasket, Costume & DIY Projects

 

[paul2748]

Try Metro Molded Parts - they have different thickness sheet rubber last time I looked at their catalog.


Carpenter has repros Part #: BM-16240

 

[51504bat]

Found them at Macs. With 10 dollar shipping it was just about the same cost as buying bulk material and making them.