I am looking for a red tube very flexible and high heat resistant which is not available anywhere in my New York (rockland county) area. This tube allows the regulation of the thermostat efficiency.

Exact model number?
What kind Gas Oil propane?

Better description of item needed
I have never heard of a tube that regulates the thermostat efficiency. Post picture if possible.

Is this a all outside package unit?

Exact model number?
What kind Gas Oil propane?

better description of item needed
I have never heard of a tube that regulates the thermostat efficiency. Post picture if possible.

Is this a all outside package unit?

This unit is a gas unit model#867 7681 91
Nuge 125 LH02
Serial# L922236784

The rubber tube is connected from the fasco pump motor #7021 7713 to a vacuum

That part number is 1003687 which is the 24 inch long 1/8 inch pressure switch rubber tube... it is available at a ICP ( Heil / Tempstar ) wholesale house... check your area phone book. If not go to an auto supply house and get some 1/8 inch windshield washer tubing for a car... that will also work until you get the proper tubing.

Great answer tsa7man. In his first post I had no idea what he was really looking for.