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Thread: Loctite Applications

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  1. #1
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    Loctite Applications

    http://www.loctite.com/int_henkel/loctite_us/index.cfm

    The following is a list of loctite products and the applications for which they should be used.

    271 (Red): High-Strength (permanent) - This loctite is to only be used on screws you don't ever plan on removing again. It requires 500F heat to melt it so the part can come loose, so use this product with caution.

    Typical Applications: Set screws plugging holes; Vertical ASA bolt; Anything that is going together and never coming apart again

    242 (Blue): Removable-Strength - This loctite is best used on any threaded part that you need to keep from coming loose, but want to remove it on occasion to clean it or install another component. It is removable with mechanical force.

    Typical Applications: Drop-Forward set screws; other set screws that need to be removed

    290 (Green): Wicking grade - This is used for parts that are pre-assembled and need to be locked in place.

    Typical Applications: Trigger rod; Solenoid plunger rod


    Thread Sealants:

    545 (Purple): This is a thread sealant, not a thread-locker like the above products. This is to be used on airline fittings that need a sealant to keep them from leaking. Allow 24hrs to fully cure.

    Typical Applications: Air line fittings

    592 PST (White Paste): This is the best substitute for teflon tape. It's a paste with teflon that does not dry and is better than teflon tape because it won't tear and send strands of tape into your gun and possibly cause problems.

    Typical Applications: Air line fittings
    Last edited by Bunny; 05-30-2014 at 10:43 AM.

  2. #2
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    Very helpful! thanks.
    This should be a sticky....


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  3. #3
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    thanks man now i know what i should use on my Omega foregrip that keeps comein lose

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  4. #4
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    How about rescources, like where to buy the stuff, because I've had a tough time finding the rarer blends locally.

    And a related question: does anyone know how strong the green sleeve retainer compound is? Like if
    I use it on a bearing that's a nice slip fit will it glue the bearing in place like, really good?

  5. #5
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    Quote Originally Posted by trains are bad
    How about rescources, like where to buy the stuff, because I've had a tough time finding the rarer blends locally.
    Loctite Tech 1-800-562-8483

    Loctite Tech told me that Loctite is only carried by industrial distributors, never retail.

    He recommends either:

    Grainger
    McMaster Carr
    Fastenall

    I use Grainger because they have a local branch and you can walk in and get it.

  6. #6
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    I am trying to change the reg on a tank, it wont come off i think it is loc but how doed one get the reg off


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  7. #7
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    I use Loctite Blue on air fittings. Works wonders. It's easy to apply, and almost totally bulletproof.

  8. #8

    White

    just found it on Amazon

  9. #9
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    Thumbs up

    Good stuff, man!

    Great post

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  10. #10
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    Awesome post! Glad to see it went up

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  11. #11
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    For all ya old school liquid loctite users for sealing...
    Loctite is now available in solid sticks!

    http://content.loctite.com/sticks/

    This takes all of the hassle away from using loctite!

  12. #12
    Thank you BlackVCG. Extremely helpful informatin.
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  13. #13
    I am a huge fan of 545 for air fittings. Just one tiny bead around the bottom of the fitting has effectively sealed every fitting I've ever used it on. Just remember to let it cure for 24 hours before running air through it (so it's not the best for emergency repairs).

    592 isn't really rated for paintball pressures... it's max is supposedly around 300psi.
    Last edited by krafty; 04-20-2004 at 05:36 PM.

  14. #14
    just so u guys kno...if u need to remove something that has been red loctited its not impossible....

    i bought a maxflo and it came with a steel hose quick disconnect instead of a macro fitting...no problem except it was in with red loctite...a small blowtorch, monkey wrench, vice, and 5 min and a little bit of teufelhunden's craziness and we had it off no problem

  15. #15
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    Brian Lojeck

    I'd suggest never using red loctite on a gun, even on parts that will NEVER EVER EVER be taken apart.

    1: blue does a damn fine job, and won't work loose on it's own
    2: even if you know for a god-blessed fact that you will NEVER take a part off, you'll take it off one day.
    Brian Lojeck, brian@lojeck.com
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  16. #16
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    Exclamation purple loctite

    i don't know about the USA but here in canada purple loctite is "low strength" for set screws not a sealant for airlines

  17. #17
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    There are, or at least used to be 2 purple Loctites. The thread locker is 222 or something like that and says thread locking. It's a low strength formula.

    Eric

  18. #18
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    Quote Originally Posted by Mer
    There are, or at least used to be 2 purple Loctites. The thread locker is 222 or something like that and says thread locking. It's a low strength formula.

    Eric
    222 Threadlocker Low Strength/Small Screw

    Low strength threadlocker. Designed for precision metal fasteners under 3/4". Protects threads from rust and corrosion. Removable with hand tools. Available Worldwide

    Applications
    Set screws, adjustment screws, calibration screws, meters, gauges.

    Color Purple (standard hand tools to diassemble)

    545 Thread Sealant Hydraulic/Pneumatic Sealant

    A liquid sealant for locking and sealing high pressure, fluid power systems with tapered fittings. Contains no fillers and will not foul valves or fluid filtering systems.

    Applications
    Used to lock and seal hydraulic and pneumatic fittings, servomechanisms, and fine-filtration systems. Specially formulated to offer lubricity for easy assembly.

    Color Purple (standard hand tools to disassemble)

  19. #19
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    How long does blue 242 need to dry on a fitting before I can run air through my gun?
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  20. #20
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    About 24 hours.

    Quote Originally Posted by drx975
    How long does blue 242 need to dry on a fitting before I can run air through my gun?

  21. #21
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    I just got off the phone with Loctite Technical.

    If you are using stainless or chrome fittings into a stainless hole (like a classic Mag valve or high end nitro tank reg) MOST loctite will not set properly and will most likely leak. They recommend using #7649 primer to help the sealant set properly.

    I normally use 545 but when I tried to change fill nipples in my tank it would leak every time because both sides are stainless which Loctite explained is non-reactive to the sealant and since there is air trapped inside the tank it will not cure ( loctite cures in the ABSENCE of air ).

    I am going to get some primer and try it.....

    ANYTHING BUT TEFLON TAPE!!!

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