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Every fitting connecting to the ASI is a copper crush except the fitting that connects it to the main injector, which is an ORB fitting. We chose an ORB fitting here mostly due to the fact that it'd make installation and clocking way easier, and also because we already had an ORB porting tool of the right size lol. However, we recently de-integrated the ASI and observed some O-ring melting. Currently our potential solutions are buying FFKM O-rings which are rated to 600 F (previous high temp silicone O-rings are rated to 450 F) or just burning for less time. However, we are concerned that the FFKM can decompose into toxic chemicals (HF) if it still melts. I'm honestly kind of surprised this is an issue; one of the reasons why I chose steel as the material is because I reasoned that it would not conduct heat as quickly to the O-ring on the outside compared to a highly thermally conductive material like copper. But I guess that's not good enough.
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