I bought one like a primus you use in a 20lt bucket around 5 years ago, it did a few weeks camped at Inskip showering our camp, then I stored it away went up again 12 months later did not go, so bought a new primus one, so my mate pulled the older one apart it just seized on the shaft my mate sprayed inox on the shaft and gave it a turn away it went, So now I have two, and both are a are still going, But what I do now is hang them up, let all the water dry out of the pump and line then spray a little inox in the pump, both still work great, Craig