High Temperature Velcro?

[0TreeLemur]

I've affixed a CO detector to the panel with what seemed to be high-quality 3M brand Velcro.  When the hangar gets hot in the summer, the stuff looses its "stickum" and I find the CO detector on the floor.  I've measured temperatures inside the hangar as high as 110F.  Is there a particular Velcro with an adhesive that doesn't loose its adhesion at high temperatures?

To be clear, it's not the hook/loop part that is losing its stickum, it's the adhesive on the back.

[N201MKTurbo]

Wow, I wish my hangar was that cool. I’ve been doing some electrical work on the hangar, mostly near the ceiling. It is quite a bit hotter up there. The oat has been 112 or so, the hangar temp is quite a bit hotter than that.

Just find some better glue to hook the Velcro on. The standard PSA is a polymer based glue and it will soften in the heat. Most RTVs will handle the heat and there is always epoxy..

[LANCECASPER]

8 hours ago, 0TreeLemur said:

I've affixed a CO detector to the panel with what seemed to be high-quality 3M brand Velcro.  When the hangar gets hot in the summer, the stuff looses its "stickum" and I find the CO detector on the floor.  I've measured temperatures inside the hangar as high as 110F.  Is there a particular Velcro with an adhesive that doesn't loose its adhesion at high temperatures?

To be clear, it's not the hook/loop part that is losing its stickum, it's the adhesive on the back.

You want 3M reclosable dual lock fastener, since he adhesive is much better than Velcro. It comes in different sizes and quantities, but this is one example:

https://www.amazon.com/Scotch-All-Weather-Fasteners-Inches-RFD7090/dp/B00347A8EO/ref=sr_1_8?crid=WBMIRW7OZ07E&dib=eyJ2IjoiMSJ9.Mt8u6lh9QrOBqXCay2-5Oy9vMQW_JyZgR4bKqBBmAsvIr-JUNOiacAp17Og_CYSd0u4cTqslnw7dtQMBnZgMczw_PBTJWx-gnQkFAp6dx_Cikt272l9K_g0aWQeYc2rage9UtSMOHypw3D8wTIZduntk3-bGndn71mlDM6NyHWcUto1lEAO1Enfma4ECahLmjMmmK92TcxX-fGDlwjOTkXD1l5SsXpTIKPnXGL2gDT8.c6Mvt66mhrTlg-NZAyRqCJhK8yGDvbMJanDPn7PFieA&dib_tag=se&keywords=3m%2Bhook%2Band%2Bloop&qid=1724673915&sprefix=3M%2BHOO%2Caps%2C154&sr=8-8&th=1

[A64Pilot]

I second the dual lock fastener, mostly because it provides a good, solid hold as opposed to the rather loose hold of velcro.

As far as better adhesive I’ve found 3M VHB tape to be very good, it’s the stuff that’s been used to attach automotive body trim for decades, but it’s usually easily removable by rolling it with your thumb, where fuel tank sealer and contact cement may be very difficult to completely clean off.

The VHB stands for Very High Bond and while I don’t know hot hot it can handle, it holds trim on black cars in Arizona etc so I assume at least 200F?

[PT20J]

+1 for the dual lock. I used it to attach the rear seat side trim panels and it holds well even in the summer heat. 

[201Mooniac]

I had the same problem and Skip recommended the dual lock, I haven't had an issue yet and it's been pretty hot some days recently.

[EricJ]

I don't recall exactly what I used, but it wasn't anything out of the ordinary and is essentially velcro.   It's been on my panel in my hangar in Phoenix for years and is still fine.    I think sometimes the surface prep (or not) makes a difference, or the type of surface itself, which may vary between airplanes.

Now that I've said that it'll probably fall off. 

 

[0TreeLemur]

Ok, thanks all.  Based on a synthesis of above, I think I need this:  https://www.amazon.com/Fastener-Reclosable-Interlocking-Adhesive-Mushroom/dp/B09G5L4LSF/

The ad text says: Long term temperature resistance: 93°C(200°F), short term temperature resistance: 149°C(300°F).

I'm assuming these temperature resistance number refer to the adhesive not the interlocking part.  Order in.

[jetdriven]

The glue isn’t as strong as the Velcro and when you pull the two Velcro pieces apart on one side of the other of the glue comes off of the part. And whatever they make that glue out of is impossible to remove later, so you have these little squares of glue instead of fuzzy velcro on the end of your glare shield

[LANCECASPER]

17 hours ago, 0TreeLemur said:

Ok, thanks all.  Based on a synthesis of above, I think I need this:  https://www.amazon.com/Fastener-Reclosable-Interlocking-Adhesive-Mushroom/dp/B09G5L4LSF/

The ad text says: Long term temperature resistance: 93°C(200°F), short term temperature resistance: 149°C(300°F).

I'm assuming these temperature resistance number refer to the adhesive not the interlocking part.  Order in.

That's 3M reclosable Dual Lock fastener in black color. They make it in black and white.

[A64Pilot]

On 8/27/2024 at 5:23 PM, LANCECASPER said:

That's 3M reclosable Dual Lock fastener in black color. They make it in black and white.

Not arguing, I’ve even seen it in clear.

[Will.iam]

Or you could just use the clip jaws and clip it to the leather handle by the door that if anybody tried to use to get out of the plane would rip out from the screw mounts. So by attaching the detector there i can see the visual alert if it flashes and hear it and it keeps people from trying to grab the leather handle to climb out of the door. Win win. 

[Pinecone]

10 hours ago, Will.iam said:

Or you could just use the clip jaws and clip it to the leather handle by the door that if anybody tried to use to get out of the plane would rip out from the screw mounts. So by attaching the detector there i can see the visual alert if it flashes and hear it and it keeps people from trying to grab the leather handle to climb out of the door. Win win. 

I use the handle all the time to get in and out.  Works fine.  No screws or mounts ripped out.

[MikeOH]

1 hour ago, Pinecone said:

I use the handle all the time to get in and out.  Works fine.  No screws or mounts ripped out.

EXACTLY!

Maybe we're not following this discussion...are people trying to make sure the actual grab handle does NOT get used??? Sheesh, that's what it's there for.

[Lax291]

Thanks very much for the 3M Dual Lock recommendation, this stuff is working great. Replaced my flimsy Velcro with the 3M to hold up my headset controller. Also put little squares on the corner of each visor and attached to the ceiling to stop them from creeping down.