Thermos Flasks

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doug748

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Is there a Rolls Royce in the vacuum flask world? One stainless one I had was so poor I threw it away; even well made products seem to have little attention paid to insulation of the stopper. Are glass ones always better? Thanks for any suggestions..
 
All of ours are either genuine Thermos or Boots ones, which take the Thermos liners anyway.

I've always been dubious about the stainless steel ones. I picked someones up once and it felt warm! It must therefore have been losing heat!

The wide necked Thermos ones aren't too good either.
 
We use a pump action s/s vacuum flask which reduces heat loss from opening stopper models. Seems to keep water hot enough to make coffee/soup all night - good for tea-making for 4/5 hours. Came from Catering Equipment Ltd; at £20ish not cheap but being pretty unbreakable should extend its working life.
 
We use a large S/S 2lt pump one about £20 from Makro all the time on board and make filter coffee straight into it using one of those filter paper holders, it works fine for us and sits in the galley sink under way. We also have a normal sized (1lt?) S/S one made I think by 'Aladdin' that we use which in the yard in winter together with the pump one will keep enough coffee hot for both of us for the whole day, but in this case we let them sit for some time full of hot water before we make the coffee into them. Both on board and in the yard we use S/S thermos hand mugs with tops as well, the kind sold for use in cars.
 
We use the SS ones and they work fine for us. We usually fill with boiling water just before we set off for the day and during the day have cup a soup or coffee. Plenty hot enough up to 16:00 having filled at about 07:00. The glass thermos ones always seem to get broken with us, and usually full of coffee at the time!
 
I've had 2 SS flasks fail on me. The first one eventually lost its vacuum - but had been used for climbing for years so had lasted well really. The second started leaking heat from a particular point on the side. Seems the inner vessel had moved until it touched the outer. They seem to be made of thinner stuff than they used to be...
 
Got 2 SS flasks - both cheap, the last under four quid - an excellent and v. clever pourer, in the sale at ASDA's - both excellent heat retaining flasks.
 
Reminded of the story about the feller who was showing his pal his new thermos flask.... "Amazing bit of kit, keeps hot stuff hot and cold stuff cold".... "Oh really" said his pal, "So what have you got in it now?"....

"Heinz Cream of Tomato and ice cream..."!
 
I've had the same problem - SS flasks are excellent when they work, but they can fail. The symptom is that they get warm on the outside and cool down quickly. Then they're just scrap metal.

I kept an old Boots one for years til it eventually failed. A Thermos brand failed almost immediately. I don't know whether it's the constantly getting flung across the cabin, or the intermittent exposure to Thames water that does it.
 
I have a few stainlesss ones. The advantage is that if they fail the worst you get is cold soup. If a glass one fails you get cold soup with glass in it. The tip with any flask is as been previously said, always temper them with hot water or cold water before you use them. Another advantage to stainelss flasks is that you can use ice cubes in them if you want to keep something really cold. I wouldn't do that with a glass inner.
 
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