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Thread: sealent used between firewall and airframe

  1. #1

    sealent used between firewall and airframe

    Robert Lewis wrote:
    >I had to remove my engine mount and when I did so, the
    >firewall came loose. After reading the musketeer mail
    >for a while this was expected. I need to replace the
    >seal between the firewall and airframe, I wondered
    >what type of sealant was used? It appears to be a
    >putty like substance. Thanks Bob Lewis

    3M Strip Caulk. Spruce sells it, your local automotive supply stores
    should stock it. About $12 per box, which is a lifetime supply.

    Bob Steward, A&P IA
    Birmingham, AL




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  2. #2

    sealent used between firewall and airframe

    Bob Lewis didn't specifically ask about this, but "just in case". In addition to Bob's recommendation for the caulk to be used on the "cold side" of the firewall, there is a fire retardant caulk to be used on the hot side, anywhere you need to seal a gap of some kind (through the firewall). In most cases our planes have things like "eyeball grommets" and bulkhead fittings to seal firewall penetrations; but just in case some aftermarket wiring was run through a regular grommet or the like, it needs to be properly sealed.

    Here is the link to one product sold by AS&S ("firewall caulk"):
    http://www.aircraftspruce.com/catalo...l2000caulk.php
    This stuff is relatively expensive and has a limited shelf life, which can be extended via refrigerated storage. Don't buy it until you need it, and get it somewhere with good product turnover (like AS&S).

    From: Bob Steward
    Sent: Thursday, May 05, 2005 9:55 PM
    Subject: Re: [musketeermail] sealant used between firewall and airframe


    Robert Lewis wrote:
    >I had to remove my engine mount and when I did so, the
    >firewall came loose. After reading the musketeer mail
    >for a while this was expected. I need to replace the
    >seal between the firewall and airframe, I wondered
    >what type of sealant was used? It appears to be a
    >putty like substance. Thanks Bob Lewis

    3M Strip Caulk. Spruce sells it, your local automotive supply stores
    should stock it. About $12 per box, which is a lifetime supply.

    Bob Steward, A&P IA
    Birmingham, AL

    [Non-text portions of this message have been removed]



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  3. #3

    sealent used between firewall and airframe

    3M FIRE BARRIER 2000 From Aircraft Spruce. Part Number 05-00949 works great

    Jeff Bryant
    Southwest Regional Director
    Beech Aero Club


    _____

    From: musketeermail@yahoogroups.com [mailto:musketeermail@yahoogroups.com]
    On Behalf Of Robert Lewis
    Sent: Thursday, May 05, 2005 6:40 PM
    To: musketeermail@yahoogroups.com
    Subject: [musketeermail] sealent used between firewall and airframe


    I had to remove my engine mount and when I did so, the
    firewall came loose. After reading the musketeer mail
    for a while this was expected. I need to replace the
    seal between the firewall and airframe, I wondered
    what type of sealant was used? It appears to be a
    putty like substance. Thanks Bob Lewis



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    [Non-text portions of this message have been removed]



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