As an owner of 8443, then I have loads of hoses and those measures do not match at all to the lengths given in the spare part list - in reality they are longer. So I'd say - just measure them exactly and then everyone in need will know, what to look for. Spare part number may be somewhat unnecessary.
Weren't they being delivered at one long string, and had to be cut when you build the model for the first time? I do recall this being the case with the Blue universal pneumatic set.
Comments
Here you go:
https://www.brickowl.com/catalog/lego-plastic-hose-4-cm-47040-51976
https://www.brickowl.com/catalog/lego-plastic-hose-4-8-cm-76279
https://www.brickowl.com/catalog/lego-plastic-hose-7-2-cm-75c09-76324
https://www.brickowl.com/catalog/lego-pneumatic-tube-black-and-grey-60-and-100-cm-set-5102
This explains such a random tolerance in lengths.