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--part1_cb.2315783c.2a2e39da_boundary Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit In a message dated 6/4/02 12:13:27 AM Central Daylight Time, richgulley@qw*.ne* writes: > A few more points to consider about o-rings, > 1st-viton burns at a high a higher temp than buna-n, 2nd viton gives of a > gas when burning that I understand is quite poisenes. However the price of > Viton is highly resistant to oxidation over time and, as such, its use is appropriate in applications where it is exposed to high fractions of oxygen for extended periods of time. It is a good choice for the tank-to-valve O-ring on an oxygen bottle. Viton, however is very poor choice in dynamic applications. Viton has poor resistance to abrasion. It wears out very quickly. If, for example, you use viton O-ring for tank valve to regulator connections, you will be replacing them every dozen or so dives. > I understand that magnesium is actually a bit harder to ignite than titanium. Safe diving, Dale Enterprise Marine Dive Charters www.captaindales.com --part1_cb.2315783c.2a2e39da_boundary Content-Type: text/html; charset="US-ASCII" Content-Transfer-Encoding: 7bit <HTML><FONT FACE=arial,helvetica><FONT SIZE=2>In a message dated 6/4/02 12:13:27 AM Central Daylight Time, richgulley@qw*.ne* writes: <BR> <BR> <BR><BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">A few more points to consider about o-rings, <BR>1st-viton burns at a high a higher temp than buna-n, 2nd viton gives of a <BR>gas when burning that I understand is quite poisenes. However the price of <BR>viton o-rings over buna-n is only pennies. So why not just use viton?</BLOCKQUOTE> <BR></FONT><FONT COLOR="#000000" SIZE=3 FAMILY="SANSSERIF" FACE="Arial" LANG="0"> <BR>Viton is highly resistant to oxidation over time and, as such, its use is appropriate in applications where it is exposed to high fractions of oxygen for extended periods of time. It is a good choice for the tank-to-valve O-ring on an oxygen bottle. Viton, however is very poor choice in dynamic applications. Viton has poor resistance to abrasion. It wears out very quickly. If, for example, you use viton O-ring for tank valve to regulator connections, you will be replacing them every dozen or so dives. <BR></FONT><FONT COLOR="#000000" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0"> <BR></FONT><FONT COLOR="#000000" SIZE=3 FAMILY="SANSSERIF" FACE="Arial" LANG="0"> <BR></FONT><FONT COLOR="#000000" SIZE=2 FAMILY="SANSSERIF" FACE="Arial" LANG="0"><BLOCKQUOTE TYPE=CITE style="BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px; PADDING-LEFT: 5px">I'm just waiting for Atomics to come out with a magnesium 1st stage :-) </BLOCKQUOTE> <BR> <BR>I understand that magnesium is actually a bit harder to ignite than titanium. <BR> <BR>Safe diving, <BR>Dale <BR>Enterprise Marine Dive Charters <BR>www.captaindales.com <BR> <BR> <BR> <BR></FONT></HTML> --part1_cb.2315783c.2a2e39da_boundary-- -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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