> If you are getting leaks from MSR bottles, something is seriously wrong with
> the seals. They should not leak even under pressure. Ever. Never had it
> happen, even when stored under pressure.
Hmm... That's strange.
First of all, when I say "leak", I mean the area around the seals, around the bottle on the metal, as well as around the pump further up on the plastic, gets slightly moist with fuel. It's visible to my photographer's eyes: the texture is different and reflects more light. But it does not leak in a torrent-like way, with puddles all around.
When I noticed this years ago, it got me worried enough to replace the seals with new ones, check with a couple of different pumps including two new ones... three differently sized fuel bottles... I always get the same result. Fill the bottle, pressurize, everything ok, no trace of moisture. Leave it for a day... It gets slightly moist, especially if the bottle is upside down or even on its side.
To tell you the truth, I do not like this, but I guessed it's the way it is, so have been using the different bottles/pumps/stoves combos anyway. I give it a Kleenex wipe just in case before ignition. I switched to MSR Simmerlite from XGK last winter.
Do you think it's not normal and those solo ignitions in the middle of the Alps...?
> Question: Why us a Nalgene when the MSR bottles are lighter or comparable -
> depending on which Nalgene you are talking about.
The idea is, the biggest MSR bottle takes huge space that does not compress when empty. With a Nalgene, you can take enough fuel for days of hard backpacking (lots of hydration), plus a small MSR fuel bottle. As the fuel goes, you roll the Nalgene Cantene. Convenience: no sloshing, more space, better balance. Inconvenience: refilling.
The Cantene does leak, more than moisten, when kept upside down or on the side for half a day. I place the bottle vertically in my backpack and wrap it in Aloksak just in case.
ANATOLY IVANOV PHOTOGRAPHY / DESIGN