replacing rear window gasket
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More Turbo
Joined: Jan 2007
Posts: 593
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From: Wichita, KS
replacing rear window gasket
I ordered the 3M butyl stuff, 8611, as seen in a couple of videos. Is it supposed to be sticky? If I peel the paper it is just slightly tacky, but not very. I have not used this stuff before. I've always used the tube of urethane with a caulking gun, so I'm not sure what to expect, but I did expect it to be very sticky so as to seal up the window.
Lead Driver
Joined: Nov 2020
Posts: 7,128
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From: Sportsman's Paradise
I ordered the 3M butyl stuff, 8611, as seen in a couple of videos. Is it supposed to be sticky? If I peel the paper it is just slightly tacky, but not very. I have not used this stuff before. I've always used the tube of urethane with a caulking gun, so I'm not sure what to expect, but I did expect it to be very sticky so as to seal up the window.
Fleet Owner
Joined: Mar 2012
Posts: 26,207
Likes: 4,151
From: Near Cal. Avenue
The clear Silicone for Fish Tanks would most likely work well also.
Just plug it with a Golf tee when you safe the unused stuff.
A 1 edge razor blade will cut & scrap a spot off if you goof..
I watched 2 guys put a sliding glass window in a 1993 Xtra Cab Toyota 4x4 using a length of cord to pull the rubber open.
I later cut and installed a manual skylight in it using a tube of Silicone to seal it along with its rubber mount.
Just plug it with a Golf tee when you safe the unused stuff.
A 1 edge razor blade will cut & scrap a spot off if you goof..
I watched 2 guys put a sliding glass window in a 1993 Xtra Cab Toyota 4x4 using a length of cord to pull the rubber open.
I later cut and installed a manual skylight in it using a tube of Silicone to seal it along with its rubber mount.
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More Turbo
Joined: Jan 2007
Posts: 593
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From: Wichita, KS
I stopped at O'Reilly's today and picked up a tube of urethane and the urethane primer. Pulled the window out with the help of my daughter and her boyfriend and got it cleaned up and reinstalled. I'm pretty sure that box of butyl ribbon sealer thing is old or something. The stuff that was on the window reminded me of what butyl rubber is normally like. I have used it for reattaching vapor barriers behind door panels and it's sticky and gets on everything. That's what was on the window already. The stuff in that box on the roll was not that at all. So I'm glad I picked up the urethane today. I cut the end of the tip so that it formed kind of a wall on the window frame. That's what I recall Safelite doing when they replaced the back window on my cadillac. It makes sure that there's no low spots. Anyway, what the help of those two it was a breeze. A very lengthy breeze, but it's all done now. I'll give it a while to dry or cure and then check it with the hose.
Trailering
Joined: Jul 2024
Posts: 15
Likes: 1
I ordered the 3M butyl stuff, 8611, as seen in a couple of videos. Is it supposed to be sticky? If I peel the paper it is just slightly tacky, but not very. I have not used this stuff before. I've always used the tube of urethane with a caulking gun, so I'm not sure what to expect, but I did expect it to be very sticky so as to seal up the window.
Factory Ford installs used foam core butyl which can shrink over time and leak in the top corners. I had one myself that leaked and resealed many of these.
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More Turbo
Joined: Jan 2007
Posts: 593
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From: Wichita, KS
The butyl is what will seal the rear glass if placed properly on the window before re-installing. Along with the bolts pulling the seal closed window against the cab. Recommend using 5/16" non foam core butyl. Getting the interior out of the way of the 9mm nuts is really the only hard part, then unbolting the motor and cable assembly if equipped with power slider. Unbolt it and push it all out evenly. No heating or primers are necessary, just the tacky butyl.
Factory Ford installs used foam core butyl which can shrink over time and leak in the top corners. I had one myself that leaked and resealed many of these.
Factory Ford installs used foam core butyl which can shrink over time and leak in the top corners. I had one myself that leaked and resealed many of these.
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Fleet Owner
Joined: Aug 2010
Posts: 21,255
Likes: 1,657
From: Reynoldsburg, Ohio
IIRC Butyl must be heated to obtain a seal. Normally used to assemble things like headlight/taillight lenses to their corresponding housings, not sure about rear glass so I'll defer to an expert on this topic @JWA for clarification.
The clear Silicone for Fish Tanks would most likely work well also.
Just plug it with a Golf tee when you safe the unused stuff.
A 1 edge razor blade will cut & scrap a spot off if you goof..
I watched 2 guys put a sliding glass window in a 1993 Xtra Cab Toyota 4x4 using a length of cord to pull the rubber open.
I later cut and installed a manual skylight in it using a tube of Silicone to seal it along with its rubber mount.
Just plug it with a Golf tee when you safe the unused stuff.
A 1 edge razor blade will cut & scrap a spot off if you goof..
I watched 2 guys put a sliding glass window in a 1993 Xtra Cab Toyota 4x4 using a length of cord to pull the rubber open.
I later cut and installed a manual skylight in it using a tube of Silicone to seal it along with its rubber mount.
FIsh tank sealants should be used on FISH TANKS!!The two biggest problems here is OP doesn't state his year or vehicle type as that definitely affects what's recommended AND OP has already completed this job. We;ll leave him to post any follow ups concerning how effective his process works.
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Trailering
Joined: Jul 2024
Posts: 15
Likes: 1
I used urethane. I read several places and watched a few YouTube videos saying to use the foam core butyl but the stuff I received wasn't tacky at all, or was barely tacky, which was why I was asking, or at least I think I asked. Seeing that glass repair shops only use urethane and having used it before, I know it works, so that's what I did.
Last edited by Kk5280; Jul 16, 2024 at 06:11 AM.
Mountain Pass
Joined: Aug 2009
Posts: 112
Likes: 25
I ordered the 3M butyl stuff, 8611, as seen in a couple of videos. Is it supposed to be sticky? If I peel the paper it is just slightly tacky, but not very. I have not used this stuff before. I've always used the tube of urethane with a caulking gun, so I'm not sure what to expect, but I did expect it to be very sticky so as to seal up the window.
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