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Critical to Replace any Deteriorated Tacky Adhesive

02/14/2018 3:18 PM

I am going to replace my 2000 Saab 9-5 window regulator rollers as soon as I have a plan to handle the adhesive inside the door(s).

There is a sturdy membrane fastened inside the door that is removable. The adhesive performance is critical to assure that the side airbags will activate. Air pressure triggers this. Saab is out of business and expertise is difficult to find.

I can certainly peel back the lower half and replace the rollers. Every video I have seen shows the adhesive randomly releasing both from the film and from the door, so the "bead" is interrupted. They say it can be reused in the narrative but I am astonished at their lack of caution. Plus, there are never close-ups of how to mend any tear in the adhesive bead.

I need to characterise this adhesive. My initial guess is that it acts like a librarian putty and/or toilet wax seal, perhaps plumbers putty. I want to know the right words for it - what is it called?

When I do the repair, I may find the the film is already loose and the adhesive is contaminated. So I want to understand how to clean, maintain, repair, or replace this.

I know the membrane can be mended with the right kind of tape (but certainly Not packing tape).

Since this is a GM version of a Saab, I may be able to purchase some squeeze tube product, but I don't see the bead on a door parts diagram.

Any insights would be appreciated.

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#1

Re: Critical to Replace any Deteriorated Tacky Adhesive

02/14/2018 3:48 PM

Oops! That is called Museum putty, not Librarian putty!

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#2

Re: Critical to Replace any Deteriorated Tacky Adhesive

02/14/2018 4:24 PM
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#5
In reply to #2

Re: Critical to Replace any Deteriorated Tacky Adhesive

02/14/2018 5:15 PM

Thanks for a fast reply.

I have submitted a query to 3M. Waiting to see how they respond to a personal (non-business) request.

I guess this might be called a pressure sensitive removable adhesive/sealant.

BTW, the adhesive varies in width in the YouTube videos. I think a bead is extruded onto one surface, and the film is pressed into place.

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#6
In reply to #2

Re: Critical to Replace any Deteriorated Tacky Adhesive

02/14/2018 6:42 PM
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#3

Re: Critical to Replace any Deteriorated Tacky Adhesive

02/14/2018 4:31 PM
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#4

Re: Critical to Replace any Deteriorated Tacky Adhesive

02/14/2018 4:54 PM
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#7
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Re: Critical to Replace any Deteriorated Tacky Adhesive

02/14/2018 6:44 PM

That looks like the same butyl tape that the RV industry uses to seal around doors and windows. Remains tacky, never seems to harden. It might be cheaper through those channels.

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#8
In reply to #7

Re: Critical to Replace any Deteriorated Tacky Adhesive

02/14/2018 8:00 PM

Maybe. I used it in the aerosapce industry and we referred to it as dum dum.

Dum Dum Strip Caulk - PRO FORM - Products

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#9
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Re: Critical to Replace any Deteriorated Tacky Adhesive

02/15/2018 10:09 AM

I heard that same term from my son when he was working in an RV repair shop.

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#10

Re: Critical to Replace any Deteriorated Tacky Adhesive

02/15/2018 6:09 PM

Sounds like the adhesive mastic strip you use to fix the sealant strip around a bath. That survives frequent soaking with water.

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