It's been a dozen or so years since new, but whatever glue I used on the rear hatch weatherstrip of my 240 is failing. Looks like I didn't miss any areas, but the rubber is just coming a adrift. The original stuff on my '78 Mercedes and day-to-day 2006 GMC are still looking good. Any recommendations as to which adhesives to use, and which to avoid?

Thanks, as always

3M has always worked well for me.

Thanks for the tip.

That's the one I'll go with.

Richard McDonel

On 8/22/2025 at 1:59 PM, mayolives said:

3M has always worked well for me.

Does it last for 20 years?

Good question. I 've used it several times over the past decades and used it again on my 79 last year but I doubt that I'll be around in 20 years to confirm.

Pretty sure I know the answer, but for confirmation's sake, I'll ask. First, the set-up.

Just got a new Precision complete weatherstrip kit for my 1972 240Z. The door strips in the kit are quite a bit different from the OEM ones in that they have a "gripper" channel (see Photo 1) whereas the OEM strips have but a thin U-channel (see Photo 2). I believe this was a design change made for the 280Z.

Both of these are meant to attach to the metal weld and quarter window flanges around the door openings. The OEM strip's grip on the flanges is then reinforced with a stiff U-channel (Photo 3) that covers all but a small section of flange along the bottom of the door opening where the inner scuff plate does the job

In his book "How to Restore Your Datsun Z-car", author Wick Humble said (page 135) that the factory's 280Z-style weatherstrip comes preloaded with a "non-hardening adhesive/sealant in the "U" of the weld flange trim that was not previously specified." Clearly, the strips I got from Precision do not have such a preloaded material

So, my question to you fine folks is this:

• Should I apply some kind of adhesive/sealant in the U-channel and, if so, what would you recommend?

I'm already using 3M Yellow Super Weatherstrip and Gasket Adhesive on the rest of the car that needs such a material.