Scepter makes a lot cans for military use, the material was undoubtedly specified by the governments that bought them for the particular purpose of the can. Not their choice. Viton is more expensive than rubber
For the past 15 years I have used petrol and diesel interchangeably in crappy jerry cans and a really old pair of military issue Scepter cans. Didn't even *gasp* clean them out when switching fuels. The jerry cans always leak. The Scepters never have.
