Well My rear window rubber outside seal gasket won't sit proper. Any suggestions on how to seat it flat-as with no bumps?????????????? Seem to gather air over 100-I mean 55mph of course.

 

Whenever I've put mine back on not only do I have to push down to seat it I have to push toward the already seated material. In other words if there is a part that is started I push down and towards the part that is already seated. Otherwise there seems to be too much slack and this will "squeeze" the material. If that made sense.

 

I use the rounded end of a small-medium sized screwdriver to really push the tongue of the seal into the channel/groove.

 

polaris, I had exactly the same problem, sorry to tell you it'll just get worse. I had the window refitted.

 

Guys,

My post from a few years ago may help....

https://rennlist.com/forums/993-foru...hield-woe.html

The plastic window channel cracks from age and engine heat. Not a good design. My solution worked since I did it - but it takes some time and finese to do.

 

Be very careful with a screwdriver near the edge of tempered glass. Use a plastic stick of some sort. The weak point in the rear, door, and quarter glasses are on the edge. One tap with a metal object could explode the glass.

 

Might be worth noting that the channel for earlier cars is different to that of later ones and accordingly the seal is different. The earlier seal has an arrowhead, the later one has one half of the arrowhead missing and will not grip as well in the channel around the screen. Here's what the TSB says:

"When replacing the rear window in cars built before July 1994, a
new rubber trim part number - 993 545 225 02 must be used. If the
rear window is not being replaced then the rubber trim, part number
993 545 925 00 is to be used.
Cars built from July 1994, use the rubber trim, part number -
993 545 225 02.
This new rubber (02) trim has a different smaller fastening profile than
the former version (00) rubber trim. Installation of the new rubber trim
with smaller fastening profile is possible because the channel applied
to the new windshield has not been spread apart.
For these reasons, the new rubber trim with smaller fastening profile
cannot be installed on a windshield that has had the former version
rubber trim installed due to spreading of the windshield channel.
The part number of the rubber trim for the front windshield of all
1995 911 Carrera is part number - 993 541 225 01"

Maybe you have the wrong seal?

 

I had the same issue and when I had my front windshield replaced, the glass guy used some type of apoxy or silicone on the rear, outside rubber window seal and it was fixed--going on 2 years.

The plastic "track" was cracked in one corner and the rubber wouldnt seal properly. The only way to replace the plastic track is to repalce the rear back window. I sent the local Porsche Dealership in a loop for weeks thinking they could order the "track" and after 2 unsucessful attempts of ordering the wrong parts, my glass guy squared it away. A little glue, let it sit for a few days, and I was good to go.

 

The passenger-side of my rear-windscreen rubber started to 'curl up' about 2 yrs. ago. I took a looksee and noticed that the area tended to pool water in that particular corner. No amount of 'pressing down' on the outside gasket made it 'sit right'.

So I waited until the whole area dried itself out then I peeled back a good 6+ inches going UP the windshield and a good 6+ inches going across towards the driver side. I did not see any rust and the inner gaskets looked OK for their vintage. The plastic groove was OK too. I swabbed the whole place with WD-40 then, also, sprayed WD-40 around the whole gasket - letting that little plastic tube find its way underneath the gasket as I moved around.

Then I let the WD-40 do its job for about 2+ days.

Went to my local Pep-Boyz/AutoZone and bought a can of 3M (black) sealant -- and put a layer of this stuff inside the 'channel' - making sure the whole bead was continuous so that no water could pool 'upstream'. On the troublesome corner, I squeezed in a significant amount of this sealant so that it was pretty much 'level' with the paintwork. Then I carefully repositioned the 'lifted' outer rubber gasket and kept the whole thing 'down' with copious amounts of painter's blue tape. I also used the wife's flexible 'door draught beater' -- (a 4 ft. long cloth cylinder filled with sand) - that I placed in a backwards L shape so as to maintain a constant (and somewhat heavy) pressure on the whole area - esp. the outer rubber gasket. It took a good week for the whole area to cure - I even had to leave the garage door slightly ajar to let out the fumes! Any excess, that oozed out, (and made the area look unsightly), I just used some 3M adhesive remover.

Well, as said, that was 2+ years ago -- and ever since - the 'rubber corner' has stayed in its place and I know no water has had the remotest chance of pooling.

Since I routinely use 303 aerospace protectant on all my trim and rubber -- the (outer gasket) rubber still looks 'good' (no cracks, flexible, semi-glossy) and should stay that way for many more years.

My $0.02,

Gerry

 

Thanks everyone. I am inclined to go for a glue solution. My rear screen is in perfect condition except for the track. Really stupid design don,t you think!!!