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Loctite products

We used it for a while on our BSP to NPT connections, but the guys decided it looked too ugly and went to tape-paste-tape. Now ee use paste-hemp-paste on the BSP conversions and its less hairy. We still require triple doping of all other threads, and STILL get an occasional leaker.

Like I told our newby, theres two people who don't have leaky joints. People who don't work with pipes, and plumbers that lie...



  • Ted_9
    Ted_9 Member Posts: 1,718
    thread cord

    We started using the Teflon threaded cord material. Has anyone one else used it? What are your results? Any tips on the usage?


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  • realolman
    realolman Member Posts: 513
    Questions, Questions

    What's with the BSP threads any way? We sometimes get metric tubing fittings with NPT pipe threads on the other end, as if the BSP was no good or something.

    Some of the other small metric stuff is running threads with a little gasket.

    Is there not a decent metric threaded pipe or what?

    Why haven't we gone metric like we were supposed to for the last 40 years?

    What do the English use?

    Who started this inch stuff?

    Wasn't it the English?

    Why is there 360° in a circle?

    Why ain't I rich and good looking, instead of just good looking?
  • Rob Blair
    Rob Blair Member Posts: 227

    I just installed my first Laing EPR Electric heater and thanks to some help from Andrew Hagen I was able to make the BSSP joints work. He suggested that I use Loctite 545, quite pricey I must say, to connect the 1" NPT to 1" BSSP fittings and it worked great. Thanks again Andrew!
  • Al Corelli_2
    Al Corelli_2 Member Posts: 395
    I have two spools

    Don't use it too much, except for those nasty old fittings on old gravity systems. We back it up with Permatex. Yeah, nasty brown stuff. We do get leaks, but very rarely. More from the "Um, I forgot to tighten that union/nipple.elbow" kind of leaks.

    The joints look too ugly. I like to NOT see any pipe joint compound at all. It is wasteful. If you can see it, it isn't doing its job.

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    Al Corelli, NY

  • Ragu_5
    Ragu_5 Member Posts: 315

    I got some for free at the Maine Oil Dealers show; I used it with Leak Lock and liked it. Nobody has it around here, nor do they have hemp. I found that both of them snug up better than tape/dope (for me).

    Yes, I also have leaks sometimes; it comes with the territory. I must say though that since using Leak Lock I have had FAR fewer leaks on glycol systems (which is the real test for me). Also, I like Permatex and Hercules Grip.

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  • bob_50
    bob_50 Member Posts: 306
    5 Min. Epoxy

  • Ruthe Jubinville_2
    Ruthe Jubinville_2 Member Posts: 674
    loctite 55

    Jerry used it occasionally to stop that nasty leak, We can get it 15 min from home in South Deerfield. ...Ruthe
  • Steve Ebels_3
    Steve Ebels_3 Member Posts: 1,291
    We use it a lot Ted

    I've found that the product works well and you don't have to use more than 2-3 wraps. More than that and the joint just gets ugly as Mark said. Stuff hangin' out all over.

    We went back to detail a job done a couple weeks ago and when Drew went to install the relief valve drop on the indirect, he found that the relief valve (with thread cord on it) was just hand tight. It hadn't leaked a drop. We did find a leak on a 3/4" boiler drain that threaded into a standard FPT copper adapter. This joint had Megaloc on it and the threads were good and tight. Still dripped. I took it out, put 3 wraps of Pipe cord on it and gave it about 3/4 of a turn past hand tight. Presto.....no drip! I like the stuff and I think we'll start using it on all threaded joints along with a smear of dope. It works.
  • Scott Denny
    Scott Denny Member Posts: 124

    Anyone ever try Super Dope Anaerobic Thread Sealant. We use it on threads larger then 2". Got to be careful to degrease the threads before applying.
  • ALH_4
    ALH_4 Member Posts: 1,790

    Rob, I was very glad to be of assistance. Those BSPT threads are a pain. I really like the Loctite 545, because the joints look very clean, and as long as the threads are clean and it is not heated when soldering, 545 does not leak. Those factors alone make it worth using in critical areas. It is definitely best to use a bench vise when tightening the fittings with this type of thread sealant. Everything has its problems, but I like this stuff.
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