Need help on Fresh air blower unit

[Cooper77]

Hi,

I disassembled the fresh air blower in my 1970 911T to swap the broken blower motor. Once disassembled I gave the whole unit a thorough clean up and have all parts necessary to re-assemble - except for below sealing rings which literally fell apart upon touching them.

Can one of you help me out with a parts number for it (can't find it in the Porsche parts list) or a handy trick what material to use to 'build my own'?

Thanks for any hints...
C

This is where they sit:




This is what it looks like:

[kuehl]

On the 2 round sealing doors, measure the thickness of the black foam material where it has not been compressed.

Go to McMaster Carr catalog, start page 3550 (in present catalog), look for a:

Closed cell
Weather resistant
Neoprene/EPDM/Foam,
Adhesive backed or you can glue with upholstery glue
Firmness (25% Deflection): 5-9 psi (soft)

McMaster-Carr

[pete3799]

I've got some stuff that i used on mine.
It's foam on one side and has sort of a soft plastic coating on the other side.
If you want to PM me i'll send you a piece big enough to do them.