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Re: [Amps] Vacuum Packaged NOS tubes

To: "Pat Barthelow" <>, <>
Subject: Re: [Amps] Vacuum Packaged NOS tubes
From: "Tom Rauch" <>
Reply-to: Tom Rauch <>
Date: Tue, 14 Aug 2007 14:11:49 -0400
List-post: <>
> Is an outer package for  transmitting tubes that has a 
> moderate vacuum
> applied,  an effective way to preserve tubes from damage 
> due to slow leakage
> around the Plate/electrode seals?  Can you put your 3-500Z 
> or other tubes in
> storage in a jar, and using some home type of vacuum 
> source, moderately
> evacuate/seal the container, and get extended life from 
> the tube inside?

The pressure change wouldn't do anything significant, but 
keeping the seals of a glass tube moisture free would 
certainly help a lot. Large glass tubes can have shorter 
life when they are stored in a moist environment. Perhaps a 
good solution would be to put them in a refrigerator next to 
the welding rods.

73 Tom

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