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Sealant for windshield gasket
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It's commonly called windo weld...
Buy 3M 3M8611 5/16" Round Windo-Weld Ribbon Sealer online at DKHardware.com. Our Automotive Hardware category offers a great selection of Automotive Glass Repair and Scratch Polishing Systems products at the best price!
I've parted out a number of e30s and presently own four. I've never pulled or changed a window, front or rear, with any type of sealant applied to it.
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Just received and email back from Guten Parts + Service. Said that they had seen it used quite a bit but is NLA. Called a car glass installer with 30+ years in the business and was told that he saw it on some but not all of the old BMWs and he had not seen the product in years. It was called butyl tape. It was used if a flange was not perfectly straight or if it had a little wavy section to fill any gaps. They are using a rope type sealant now that lays in the grove of the window seal to fill any voids if needed. Thanks for the help.
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butyl tape has not been used in years because its actually illegal to use for windshield installation. its ok to use on rubber gasket windows to stop leaks but not for bonded applications. you can still purchase it, its known as body caulk. DO NOT use silicone or anything else if you have a leaky window, unless you enjoy making things worse.
comes like this:
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I have the same butyl crap on my original windshield. Also it looks like my gasket was urethaned to the top portion of the frame on the car AND some adhesive was used all around to set the glass. Butyl tape on the bottom makes sense, I have zero rust on my pinch welds etc.
What do you guys thing about the other urethane crap. I was under the impression its not needed for this type of gasket. Is my old gasket still reusable? I ordered new gasket to be on the safe side. Do I need to install it with some glue crap as OEM did? I'm pretty sure this was OEM fix. Could it be that BMW leak tested the car and as a result these are their fixes?
first two pics are the gasket lips that go toward the body, other two are the side against the glass
Last edited by zaq123; 11-10-2019, 04:43 AM.
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