Another Reason To Carry Spare Tubes

Michael Press wrote:
In article ,
Tom Sherman wrote:

Peter Cole wrote:
wrote:

Heh... I'm feeling a bit foolish at the moment. My patch cement was
dried up completely, couldn't even get a dab out of it.
As Jobst has pointed out many times, it's the crimp at the end of the
tube that's not completely airtight and allows solvent to evaporate. If
you roll the base of the cement tube and crimp it firmly the evaporation
will be slowed considerably. This is important for both used and unused
tubes.
Could one seal the crimp by dipping it in Goop [1] or something similar?

Is the cured substance a barrier to hexane diffusion?

why hexane? rema cement solvent is trichloroethylene, not hexane.



Is the seal between the cured substance and the
cement container a barrier to hexane diffusion?

Better to ask on sci.chem. Nobody here has said
anything about this kind of thing.