HP-65 Card Reader

[Massimo Gnerucci]

(11-26-2018 03:02 PM)albertofenini Wrote:  Hello everyone,
I have searched thru the forum but I haven't been able to find the inner and outer diameter for a silicon tube that can work on the card reader.
I recall somehow outer : 6 mm, inner : 3 mm
Anyone can please tell me what the correct size is ?
Thanks for help in advance Alberto

Have a look here Alberto.

Geoff says:

Quote: silicon tubing or small o-rings (inner diameter smaller then
outer diameter of post).

silicon tubing: ID 2.55 mm
OD 5.60 mm
Fuel line hose for model aircraft. Specify
military specs as the hole is dead centre and
therefore usable for pinch roller
o-rings ID 2.55 mm
OD 6.50 mm
Hardware store.