Replacement for "O" rings.

[Bernie Murphy]

Ken:

If ozone is causing O rings in your radio to deteriorate in two weeks, I 
would be very concerned about what the ozone is doing to your health! 
Anything that corrosive sounds like bad news.

I would seek a professional in the environmental space and get an opinion 
regarding the situation.  A local university would be a good start.

Google "ozone health hazards"  results  in many hits including
http://www.ccohs.ca/oshanswers/chemicals/chem_profiles/ozone/health_ozo.html

which should give you an idea of the dangers of ozone.

73, Bernie


----- Original Message ----- 
From: "Kenneth G. Gordon" <kgordon2006 at VERIZON.NET>
To: <HEATH at LISTSERV.TEMPE.GOV>
Sent: Tuesday, April 18, 2006 10:25 AM
Subject: Re: [HEATH-TEMPE] Replacement for "O" rings.


> On 18 Apr 2006 at 9:01, Mark Sykes wrote:
>
>> They eventually dry out, stretch a bit, and then they slip.  Think of
>> them as part of a yearly maintenance item in a tube rig.  I took one
>> to a hardware store and got replacements very cheaply.
>> >
>> > Is the problem with the orings is that they don't hold up or that
>> > they don't work well?
>
> Actually, they WORK quite well, and in most environments, hold up a
> long time.
>
> However, we have an electronic air-cleaner both in our home, and at
> work. One of the ways these things work is that they add a SMALL
> amount of ozone to the air. The ozone both makes the air smell cleaner
> (like the air does after a thunderstorm), and kills a lot of bacteria and
> viruses that ordinarily are in the air.
>
> The percentage of ozone in the air has to be kept fairly small, or it will
> irritate eyes and other soft tissue.
>
> However, apparently ANY amount of ozone causes RAPID deterioration
> of the material the "O" rings are made of. In my case, they last about 2
> weeks!!!!!
>
> I first discovered this problem at work when I was having to replace the
> drive belts to CD ROM drives in many computers. Those drive belts are
> made of the same material that the "O" rings in our rigs are.
>
> Ken W7EKB
>
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Products bought, sold or traded here is the responsibility of the
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This list is a public service of the City of Tempe, Arizona
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