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Thread: Marking various nuts on aircraft engines??

  1. #1

    Join Date
    May 2017
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    15

    Marking various nuts on aircraft engines??

    What kind of paint is used to mark various nuts on aircraft engines to check for unwanted rotation after assembly? It seems to be a thicker then normal paint, but I haven't been able to find any info. Thanks
    Brian

  2. #2

    Join Date
    Aug 2011
    Location
    Marietta, GA
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    599
    It is marketed under the name of "Torque Seal"...

    https://www.aircraftspruce.com/pages...torqueseal.php

  3. #3

    Join Date
    Jul 2011
    Location
    Clarklake, MI
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    1,995
    Or you can go directly to the source: http://crosschecknow.com/

    On aircraft, it's not limited to engines. Used from spinner to tail. Also not limited to identifying relative movement. Often used during assembly after torquing a fastener so subsequent inspections can use that marking to verify the fastener has been torqued to finish value.

  4. #4
    DaleB's Avatar
    Join Date
    Sep 2015
    Location
    KMLE
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    312
    Torque-Seal is great stuff because it's thick and brittle. I've also seen suggestions to leave the cap off a bottle of nail polish until it thickens up a little.
    Measure twice, cut once...
    scratch head, shrug, shim to fit.

  5. #5

    Join Date
    May 2017
    Posts
    15
    Quote Originally Posted by Kyle Boatright View Post
    It is marketed under the name of "Torque Seal"...

    https://www.aircraftspruce.com/pages...torqueseal.php
    Thanks for the link
    Brian

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