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> Also, in my experience, when someone inexperienced first learns what pipe tape is, they try to apply it to everything. That’s me. Whoops.
by balls187 4y ago
> Also, in my experience, when someone inexperienced first learns what pipe tape is, they try to apply it to everything.
That’s me. Whoops.
- rdl 4y agoUgh, I applied it to PVC pipe, which made it leak, sigh.
- deleted 4y ago[deleted]
- VincentEvans 4y agoThere’s no problem applying it to a threaded connection in PVC. Unless you mean that you’ve figured out a way to apply to a fitting that’s meant to be glued? In that case I commend your abundant creativity.
- rdl 4y agoMy experience is that even one wrap of PTFE tape on threaded PVC causes it to loosen and then leak, and it's recommended by youtube/google to not use it. (Some say sealant is ok).
- VLM 4y agoTape causes massive contamination problems with fuel and hydraulic systems. Its not that the Teflon reacts with hyd oil, its that the inevitably little tiny bits of stuff physically jam/ruin seals and clog nozzles.
- culopatin 4y agoBut only if you put the tape over the edge. I usually leave the first 2 threads uncovered, why would it fall into the stream if you don’t cover the tip of the thread with it?
- VLM 4y agoThe most installed/removed NPT thread will leak the most thus have the most tape added and the scraping of installation/removal will guarantee teflon contamination of the system eventually. You are also correct in that something installed one time for the lifetime of the system, especially with some care and attention to cleanliness, is almost certainly OK.
- kevin_thibedeau 4y agoWhen you open up the joint, bits are left behind in the female half. Then they get pushed in when it's resealed.
- lazide 4y agoThe tip of the thread in NPT is the one that needs the lubrication the most, hah. Pipe Dope causes similar issues though.