67 B Body, New fuel filler elbow leak.. seepage thru it?

[Big Bad Dad]

About a year or so ago, I found fuel on the floor under the rear of my 67 Coronet. The original fuel filler elbow had deteriorated and was leaking badly. It was so rotten, I could just about tear it off of the car by hand. I had a repro elbow that I had gotten several years ago, but had never changed it. So I installed the new elbow. Today, I was under the car, and see liquid pooling up like ready to drip from the new elbow. It actually felt oily. There was no indication that there was a leak from around the connections, and it looks like the fuel may actually be seeping through the rubber elbow itself. I am wondering if the repro part was made out of the wrong materials and the fuel was penetrating it. Has anybody else ever seen this issue, or heard of it happening?

 

[440 4 speed]

I read somewhere that the latest repo stuff is poor quality. Think they mentioned getting a fuel resistant hose that has the elbow from maybe Gates and cut it. Also think Vitron rubber hose might work.
Someone on here will know for sure.

 

[Gus chiggins]

Probably repop junk. The rubber gasket on the flip top gas cap (GTX) rotted so badly i could pry chunks of it off.

 

[Jerry Hall]

The repop stuff isn't ethanol friendly.

 

[diesel_lv]

I had an issue w a repop for my '67 about a yr ago. Measured the pipe diameter and got a Gates 90° hose rated for fuel and trimmed it to length. Used band clamps that are typically used on turbo boost hoses. No problems anymore.