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Used a generic O-ring on a Cessna 172 fuel line and it failed in 2 weeks
I swapped a fuel line fitting on a local club's 172 and grabbed a standard Buna-N O-ring from my general kit instead of ordering the proper MS29513 spec part. The generic one swelled and started weeping fuel after just two weeks of normal operation. I learned the hard way that aviation-grade materials are a spec for a REAL reason, even on simple seals. Anyone else have a story about a 'close enough' part that bit them?
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dixon.spencer14d ago
Honestly, that's terrifying on a fuel line.
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joelh6414d ago
Yeah @dixon.spencer, that's a total nightmare fuel. Had a rusty line on my old truck spring a pinhole leak last winter, spraying gas right near the exhaust. Smelled it for days before I found the spot.
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Wait, you put a hardware store O-ring on an airplane fuel line? That's the kind of thing that keeps me up at night. How is that even a choice someone makes? The specs are there for a reason, and fuel is nothing to mess with. Glad you caught it before something really bad happened.
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