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Windshield Gasket Sealant

Discussion in 'Early CJ5 and CJ6 Tech' started by Wmi68CJ5, Jun 8, 2022.

  1. Wmi68CJ5

    Wmi68CJ5 Let the Sun Shine!

    Has anyone ever used polyurethane sealant between the windshield gasket and windshield frame and maybe even the glass? I see that Quadratec sells it in the gasket section of their catalogue. I think it would be a messy endeavor.

    Thoughts?

    Thanks Todd
     
  2. Oldpappy

    Oldpappy A.C. Fults - Curmudgeon at large 2022 Sponsor

    Doesn't need it if the gasket is in good shape.
     
  3. kenny78

    kenny78 Member

    On my Blazer, I learned the hard way, several times, that a good seal is done with the rubber. Not the sealant that the parts store is insisting the “pros” use. I imagine it carries over to both places on the cj
     
  4. sterlclan

    sterlclan Member 2024 Sponsor 2022 Sponsor

    No sealer on a gasket urethane ane is for glued in glass no rubber.
     
    timgr likes this.
  5. kenb

    kenb Cleverly disguised as a responsible adult

    My M38A1 has a one piece replacement windshield. I've been thinking about if there is a possibility of gluing a vertical rubber strip down the middle to give the appearance of a two piece windshield. Not sure if such a thing would hold up.
     
  6. 47v6

    47v6 junk wrecker! 2023 Sponsor 2022 Sponsor

    I used polyurethane black caulk to set my glass, but it’s a 2a windshield with a semi rusted out inner wind shield. In my application the glass sits inside a channel. I would not recommend this in a stock civilian one piece windshield with a rubber gasket.
     
  7. timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    The 2-piece windshield is less safe than a single pane. The center bar could critically obstruct your vision at some point. The military must have had a reason to specify a split windshield. Split windshields for passenger vehicles became obsolete when technology developed to provide one-piece glass.
     
    Ol Fogie likes this.
  8. Wmi68CJ5

    Wmi68CJ5 Let the Sun Shine!

    Success! That was a full body work out getting the spline in.
     
    truckee4x4 and Glenn like this.
  9. Glenn

    Glenn Kinda grumpy old man Staff Member

    It makes for a pretty good mental workout too! I'm glad you knew to install the rubber with the locking strip outside. :)(y)
     
  10. Wmi68CJ5

    Wmi68CJ5 Let the Sun Shine!

    Every frame I have ever seen has the spline lock on the outside.
    Hot water and dawn dish soap helped a bit. I ended up using a hardwood(a cherry cutoff from my sailboat build btw) wedge to install the glass and the spline. Worked good just tedious
     
    Glenn likes this.