helium super leak

tope · Aug 19, 2002

I have a helium super leak that is too small to locate. Some suggested coating all the connections with the brand name Estane polyurethane. You mix 10 g Estane with 50 g methylene chloride and 50 g acetone and paint the solution on the suspected leak areas. Has anyone tried fixing a very small vacuum leak in this manner?

eigenstate · Aug 28, 2002

I've not tried the Estane-poly method, but you may consider applying a thin coating of Stycast to the suspected area (Lakeshore carries the stuff).

Larry0322 · Aug 28, 2002

I have experienced such a problem with a dewar feed leak several years ago.
We us a spray silicone product to seal the leak and it worked very well. I have looked on the internet to see if I could find the vendor, but no luck.

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helium super leak

tope

Mechanical

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eigenstate

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Larry0322

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