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Date: Sun, 22 Feb 1998 10:17:59 +0100 (MET)
To: techdiver@aquanaut.com
From: divetek@we*.ch* (Roberto Bagnasco)
Subject: techdiver@aquanaut.com
 Nitrile O-Rings have been around before Viton, and are used pure O2 for
industrial and medical oxygen handling. Nitrile O-rings are used normally
for the necks seal of O2 tanks.

Both are not as good as silicon, not as elestic and durable, but they do
not burn with O2.

You can use Silicon up to 40%, but on the long run the O-ring will be oxydized.

If you plan to use Nitrox 40 everyday, you better change O-rings.

Why don't you do like us? We do not have any silicon, only Viton or
Nitrile, O2 clean and compatible equipment and double filtrated air always.
Less problem from the beginning.

Roberto


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