Video head cleaning [I]crisis[/I]

[Olorin67]

ordinary Plastics are fairly porous to volatile solvents. it will permeate right through the plastic. that's one reason most cars have gone back to metal fuel tanks. even rubber fuel hoses on lawnmowers have to be certified low-perm material now. Company I work for now just spent big $$$ testing permeation of fuel cap gaskets, I had to find a lab that can do gas chromatography.