Any help in obtaining parts would be gratefully appreciated.
I'd like to find a US supplier of Hi8/Video8 pinch rollers where I can
select the rollers by the actual part dimensions instead of Brand-Model.

I'd also like to find a supplier with the same selection for upper
drum/video heads for Hi8 tape mechanisms.

I haven't contacted ASTI, but they might be able to help with the head
assemblies.

The Hi8 video machines that I'd like to find parts for are Teac military
AVTR airborne video tape recorder units. Some of the Teac Hi8 equipment has
also been in use in airline aircraft as IFE in flight entertainment
equipment.
That particular division (aerospace products) of Teac was bought by a large
military equipment supplier, Goodrich.

Teac wasn't/isn't a VCR/camcorder manufacturer, and the tape transport
mechanisms may be made by another major manufacturer, although the circuit
board of the video heads is labeled Teac (but no part number).
The hub of the head assembly is dated (yy. mm. dd), and I've seen other
brands of heads that were dated the same way, but can't remember which
brands.

The head assemblies don't appear to have any special characteristics, just 2
record/play heads and a FE flying erase head.

--
Cheers,
WB
..............