Hi guys,

I had a few experiments to cast a rubbing strip for oldtimer bumpers (middle of the bumper).  So these cars aren't outside for months, but strip needs to be sort of weather proof


So I bended a aluminium for mould, shape is perfect.

After using some casting rubbers (including UV stabilisator) I keep having strange complications.

UV really kicks in after 14 days:


strange spots after rain:

color fading away after 14 days


is there someone who can point me to the right (easy comp) kind of product?  needs to be a little flexible / soft ...

thanks in advance !!