Hi Bob-
Merry Thanksgiving!
> Just curious about NPT threads/fittings. Is it the "narrow-ness" of the
> thread that makes these fittings so perfect in a fuel environment? It
seems
> that you don't even need anything extra (like teflon tape) to prevent
leaks.
NPT stands for "national pipe thread". Look closely at the threads, you'll
find they are slightly tapered. The diameter of the threads cause the joint
to get tighter the farther in it's turned. Thus there's no need to seal
against a washer under a bolt head.
Best,
Skip Gurnee
64 TR4, 65 TR4A
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