Docter Optic Replacement Parts?

[RobAK]

I'm in the process of relocating my Docter Optic from a rifle to a mount on top of my ACOG. Does anyone know a source for a replacement of the adhesive rubber gasket that comes with the sight and goes between the sight and the base its mounted on?

Thanks in advance.

 

[Canuck223]

Contact Police Ordnance in Markham. They are the Canadian Distributor at last look.