Longevity Report - Buna O-Rings
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Joined: Jan 2002
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From: La La Land
Longevity Report - Buna O-Rings
In November 2004, at 133K miles, I developed a fuel drain valve leak.
A quick trip to Home Depot rendered two Buna O-rings from their plumbing section. Note these were NOT Buna-N (nitrile). I figured they would last long enough to get some Viton rings in-hand. Given my penchant for "If it ain't broke, don't fix it", the Viton ones never made it into the valve.
Fast-forward to this afternoon. 51K miles and 4-1/3 years later, at 184K miles. After changing my lube oil bypass filter and checking for leaks, I notice a drip from the drain extension hose. Well, I knew this day would eventually come.
So, thanks to Guzzle92, I now have two bright blue fluorosilicone, Mil-Spec M25988/2, never-again replace, best money can buy, O-rings! And they're really inexpensive, too.
My Viton rings, eventually purchased years ago, are still in the center console, and they should someday go to the final resting place of the truck, still in their package.
Thanks, Guzz!
Pop
A quick trip to Home Depot rendered two Buna O-rings from their plumbing section. Note these were NOT Buna-N (nitrile). I figured they would last long enough to get some Viton rings in-hand. Given my penchant for "If it ain't broke, don't fix it", the Viton ones never made it into the valve.
Fast-forward to this afternoon. 51K miles and 4-1/3 years later, at 184K miles. After changing my lube oil bypass filter and checking for leaks, I notice a drip from the drain extension hose. Well, I knew this day would eventually come.
So, thanks to Guzzle92, I now have two bright blue fluorosilicone, Mil-Spec M25988/2, never-again replace, best money can buy, O-rings! And they're really inexpensive, too.
My Viton rings, eventually purchased years ago, are still in the center console, and they should someday go to the final resting place of the truck, still in their package.
Thanks, Guzz!
Pop
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Joined: Nov 2006
Posts: 11,286
Likes: 263
From: North of Greenville
I've got a set from Guzzle, too, just waiting to go inside that little valve arrangement to stop the oozing. Can't wait to get to that one, along with several other fitting tightenings around the fuel and HPX lines.
Post Fiend
Joined: Feb 2006
Posts: 11,892
Likes: 2
From: Middle Tennessee
It's good to know the Home Depot stuff can fix the problem, and not just exactly temporarily either. May not be the ideal fix, but it looks to work. Thanks for the info Pop.
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Joined: Jan 2002
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From: La La Land
Remember, all the threaded, o-ring'd fittings are LocTite'd into their holes. Turning them, even slightly, will break the LocTite, as it's a solid plastic once cured.
I am of a firm belief that the LocTite is the most important sealing agent, not the o-rings, in sealing the HPOP's pressure against leakage.
Therefore, "tightening" those fittings may actually create new leaks.
Food for thought...
Pop
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Joined: Nov 2006
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From: North of Greenville
Something to think about when "tightening" stuff:
Remember, all the threaded, o-ring'd fittings are LocTite'd into their holes. Turning them, even slightly, will break the LocTite, as it's a solid plastic once cured.
I am of a firm belief that the LocTite is the most important sealing agent, not the o-rings, in sealing the HPOP's pressure against leakage.
Therefore, "tightening" those fittings may actually create new leaks.
Food for thought...
Pop
Remember, all the threaded, o-ring'd fittings are LocTite'd into their holes. Turning them, even slightly, will break the LocTite, as it's a solid plastic once cured.
I am of a firm belief that the LocTite is the most important sealing agent, not the o-rings, in sealing the HPOP's pressure against leakage.
Therefore, "tightening" those fittings may actually create new leaks.
Food for thought...
Pop
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