From Ed's website:
Motorola Television CRT Mask for Models VT-71, etc. (VTmask)
These are the long awaited masks to replace those rock hard or melted masks from years ago. Pictured on the right is an original mask, and on the left is the reproduction. Both masks are made of foam material with a smooth skin surface.
The back side is cupped to fit over the CRT, just like the original. (The mold was made from an original that was still in good condition.)
Click on the picture to see a larger view.
The originals were spray painted with a gray paint around the visible part of the mask. My reproductions are tinted in the manufacturing process to a gray, making it unnecessary to paint them.
Installation note: It may be difficult to get the CRT to seat into the depression on the back of the mask. Try using water, or some other lubricant that dries quickly. You don't want to use Vaseline or something else that will stay on the rubber for a long time as the rubber may be adversely affected by it over time.
1 Mask: $45.00
http://www.renovatedradios.com/parts.html