What is the "glue" used by Polk to seal holes in binding posts on inductors, etc.?

RichCanDo

Does anyone know correct name of the material or "glue" used to seal the holes in binding posts? I assume it is the same stuff used on the inductors on the crossover. I should know as used this before but cannot remember the correct name! I want to obtain some to upgrade my crossovers and binding posts. Thanks in advance for an answer.

hoosier21

hot glue from a hot glue gun

ben62670

What he said

jakelm

Its not hot anymore....I hope

So its just glue, that came from a glue gun that made it hot, but cools off.

RichCanDo

It is not hot glue from a Hot Glue Gun. It is not hot when applied. It is used on circuit boards and there is a specific name for it. It is easier to remove than hot glue.

jakelm

RichCanDo wrote:

It is easier to remove than hot glue.

What is an easy way to remove it? My iron gets messy trying to melt it enough to remove the parts.

RichCanDo

The glue commonly used by manufacturers can be peeled off, or scraped off. No heat required. It is similiar to the coatings used on machine tools to protect sharp edges from damage when packaged, except this remains soft and pliable. The "glue" used for electronics gets harder, though remains soft enough that you can push your fingernail into it.

jakelm

Well the glue that surrounds my caps and resistors on my xover is not that plyable to where it can be peeled off. The only way I have found to remove it enought to take the parts off is to melt it.

RichCanDo

the glue that surrounds my caps and resistors on my xover is not that plyable to where it can be peeled off

Is the glue on your crossover the same as the "glue" used to cover any possible air leaks on the Binding Post Plate? A different glue is used to hold parts such as resistors to the PCB. The material I want a name for, I think, is not really considered glue. I do not remember what it is called as last used it over 25 years ago.

In my 1.2TL's the large glob of "glue" placed on the inductor coils to hold windings in place, appears to be the same as used to seal air leaks on the binding posts plates.

RichCanDo

I removed the original binding posts and installed new ones in one speaker cabinet yesterday. I simply peeled the "glue" off the binding posts and the plate. As almost the entire plate was covered with this glue, I had to make a few cuts with a razor blade to make smaller pieces, then peeled it off. (I left it on the IC jack) It comes completely off metal parts, like nuts and bolts, but I had to scrape some off left behind on the plastic plate itself. The new binding posts required a .397" hole in the plate and have a washer on each side of the plate. Silicone under both washers prevents air leakage. The posts have a hole drilled all the way through them. (Post is hollow, banana plug can go in one end, crossover wire in the other end, fastened with a set screw.) I put silicone in the center of this hollow portion for about 1/2". Now the binding posts are airtight without having to cover them with any sort of glue to seal air leaks.

I still want to know what the material is the factory uses, if anyone knows.
The back of the Interconnect Cable Socket needs some. Factory missed covering the holes where the pin and blade exit this jack. Air leaks from the holes where pin and blade go through the plastic socket.

ViperZ

As a bunch of people already said, it's most probably hot glue. On PCBs, manufacturers usually use epoxy (like 5-minute epoxy stuff) to attach components, or solithane...

dorokusai

Rich - Are you thinking of DAP?

RichCanDo

No, not DAP. This stuff is made specifically for circuit boards.
I heated a piece that was removed from the binding plate. It appears the stuff Polk uses is some type of a hot melt glue. What I was seeking a name for is similiar, but is applied cold, no heat required.

F1nut

The original glue used by Polk is somewhat different than the hot glue stuff from the craft store. However, I've found it's much easier to remove hot glue than the stuff Polk used.