Russell 640813, 640803 TBI fuel line adapters

After a logistical hassle that shouldn't happen in 2012, I got the necessary fuel line adapters for the GM (Rochester) TBI unit:
  • Russell 640813: male 14x1.25 mm (14 mm thread w/ 1.25 mm pitch) to male AN-6
  • Russell 640803: male 142x1.25 mm (12 mm thread w/ 1.25 mm pitch) to male AN-6

However, the hydraulic shop informed me that the white seals these fittings come with are a kind of vinyl material that isn't E85 compatible. I'll need to get replacements for those, apparently out of Teflon (PTFE).

They're not O-rings, but a straight cylindrical shape instead.


The original fittings have a wedge that holds the seal in place, and the original seals have a slightly conical(?) shape that makes them snap onto the end of the fitting.

Tiivistekeskus didn't stock this kind of seal, and their sales person wasn't very optimistic about finding one either. Apparently they don't have verified information about combined gasoline and E85 compatibility of their materials, and weren't prepared to make wild guesses either. They could "lathe" custom PTFE (Teflon) gaskets according to measurements, at an approximate price or € 50 apiece, though.

Seal dimensions:

All measurements are in mm.

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