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Is sealant/bedding material needed under chrome trim?

I seem to remember seeing a comment in a thread saying that a sealant or bedding material should be used underneath chrome trim on door and targa window chrome. Is this true?



If so, should I use this stuff....or 3M Strip-Caulk?



My instincts tell me that this stuff might actually trap moisture and promote rust.

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Steve B.

1972 911t
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Old 02-04-2017, 08:13 AM
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I would trust your instinct on this one.
Old 02-04-2017, 08:29 AM
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I use good electrical tape. It's close to what the factory used
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Old 02-04-2017, 08:33 AM
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The factory used some sort of sealant under the rear window trim, but not on the door. I would put something under the door trim, but not something that would stick to the paint. Electrical tape or maybe some thin foam insulator tape sounds like a good option there.
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Last edited by Trackrash; 02-04-2017 at 10:12 AM..
Old 02-04-2017, 10:09 AM
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I noticed that the seal under one vent window had remnants of some kind of cloth tape under it. Is this the kind of electrical tape you mean?
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Old 02-04-2017, 11:01 AM
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butyl rubber sealant tape, a very thin bead along where the holes are. Don't use any silicone based stuff, it traps moisture.
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Old 02-04-2017, 11:03 AM
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What's the purpose of the sealant? Water intrusion doesn't seem to be a problem under the chrome pieces you mention.

Steve
Old 02-04-2017, 01:23 PM
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Maybe to keep them from rattling or squeeqing.
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Old 02-04-2017, 04:12 PM
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I can't speak to the targa but there was some trim in the rear quarter windows of the coupe as well as the door trim.

It does resemble butyl tape.


1969T



Tim K
Old 02-04-2017, 05:36 PM
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Quote:
Originally Posted by sballard View Post
I noticed that the seal under one vent window had remnants of some kind of cloth tape under it. Is this the kind of electrical tape you mean?
That's the original. Good electrical tape seems to serve the same purpose which I think is to both protect the surface and stop rattling
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Old 02-04-2017, 08:53 PM
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On the rear chrome trim (bottom of rear Targa glass) there is an actual plastic seal with a bead on it that goes under it. DO NOT just use tape. The bead goes on the OUTSIDE of the trim and the screws that attach the trim go right through the seal to secure it
Old 02-05-2017, 05:16 AM
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jrsully- Is there a vendor that sells this plastic seal? I've seen something like you describe on some old schematics, but not on Pelican's site. Do you have the part number by any chance?
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Old 02-05-2017, 06:39 AM
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Yes, Stoddards has it, see link below

http://www.*************/90156555740.html

Old 02-05-2017, 10:17 AM
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