Getting input on whether to use or not use pipe tape, goop, or nothing on these brass fittings to inlet and outlet of the fuel pump for my 61 Olds 98. Don’t want any leaks after the fact.

 

I use Teflon tape on that type of fitting.

 

I was leaning towards that, thanks for the feedback.

 

Loctite 565 has been my go to lately after having leaks with tape. Of course, it could have been my application skills, too. The goop hasn't leaked yet.

 

Any thoughts on this stuff? For fuel applications like mine?

 

x2 on using teflon tape. I haven't used that Loctite before. As long as it's fuel safe you should be good.
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92 is higher than 65; it's got to be better, right? 🤣

 

Another important thing to be aware of with teflon tape in these applications. Is to avoid the first one or two threads with the tape, you do not want this(pieces of it) getting into the fuel line and finding its way to a carb seat etc.

 

The threads aren't the sealing points on these fittings, the flared seat is the seal area. I'd slide the nut back a little, put never seize on the tubing and then use teflon tape on the threads as a lubricant.

 

Look again. There are two brass fittings that screw into the pump body. I suspect the threads are tapered pipe but not 100% sure on that.

 

I think you might be correct, thanks Fun71. To the OP if they aren't flared seats I would use teflon tape.

 

Correct they are NOT flared. I will go ahead with the teflon tape, avoiding the first few threads.

 

Having just been down this same road, I will just say that if your fittings are NOT flared (on my Q-Jet they are) and you're using tape, you might want to investigate gasoline-resistant sealing tape. The jury's kind of out on regular plumber's tape in fuel line applications.