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DonVoigt · 10-05-2017, 10:41 PM

GT,
2 different chemicals and two different purposes.
Superglue is an "adhesive", it works best with a porous surface to adhere to and is not very strong against "shearing" force- pulling yes. It may have some effect as a locking agent. Superglue is not flexible when cured.

Loctite is a hardening plastic/polymer type compound , it fills spaces and turns to a solid- but does not "stick" anything together, it only works by friction from the very tight fit it causes and the nooks and crannies it fills and then solidifies into a single piece of plastic. It remains flexible, which helps with its removal.

Nylon lock nuts or Nylocs are good once, if they are removed they lose tension as they have been deformed in the first installation.

Safety wire is very good, but Not universally applicable, and fallible also. One might think it "best" as it is what is used on airplanes, where a "loose nut" is fatal.

This is a pretty basic and over simplification of the two compounds and how they work.

JMHO as an "ex" chemist and long time 'smith.

G.T. · 10-05-2017, 10:53 PM

I got an A in College Chem? All I remember is hydrogen is light, and gold is heavy.... And when exposed to air, white phosphorous is pretty darn impressive!

..... Thanks Don, til...lat'r....GT

Rick W. · 10-05-2017, 11:10 PM

G.T.

I am under the impression that most superglues are not at their best in higher heat environments, usually around 250F or so. I am pretty limited in my superglue experience, I suspect that the TDS on some of the offerings are on the net, and could be informative as to parameters; more informative than me making conversation.

Some of the blue Loctite threadlockers are rated at 650F, of course, there are lesser temperature varieties of the same blue color. So sometimes specifics are relevant.

I believe that threadlockers and retainers are kinda different animals of a sort. Example of 242 or 2422 as a threadlocker and 620 as a retainer. Threadlockers for threads, retainers for cylindrical objects; of course. As you might surmise, the layman only gets certain level of materials, but I have to admit that they are pretty capable for my needs.

I was informed about the 620 useage in the gun business from a friend. I did experiments, trying to gain confidence in these Loctite products, by a high temp solder and 620 on two ends of a shaft with cylinders glued on. I could not break either one, and the heat resistance with a torch was right good.

The 620 proved itself to me with a NECG front banded sight. Of course, I clocked it wrong some, and my.....that took a lot of heat with a torch to get off. I have to admit, that adventure, made me improve my methods with banded sights....

Time of bond varies with some of these marvelous things, ie some are quick, some give time to fool around a little. But once they set, some are right difficult to remove nicely.

I believe that context of environment is everything, everything has requirements that have to be met for a successful outing.

The Loctite(Henkel) site has a lot of TDS documents if you so want to peruse for your specific needs.

Rick W.

10-05-2017, 10:41 PM	#1
DonVoigt User Join Date: Apr 2015 Location: near Charlotte NC Posts: 4,681 Thanks: 1,443 Thanked 4,356 Times in 2,041 Posts	GT, 2 different chemicals and two different purposes. Superglue is an "adhesive", it works best with a porous surface to adhere to and is not very strong against "shearing" force- pulling yes. It may have some effect as a locking agent. Superglue is not flexible when cured. Loctite is a hardening plastic/polymer type compound , it fills spaces and turns to a solid- but does not "stick" anything together, it only works by friction from the very tight fit it causes and the nooks and crannies it fills and then solidifies into a single piece of plastic. It remains flexible, which helps with its removal. Nylon lock nuts or Nylocs are good once, if they are removed they lose tension as they have been deformed in the first installation. Safety wire is very good, but Not universally applicable, and fallible also. One might think it "best" as it is what is used on airplanes, where a "loose nut" is fatal. This is a pretty basic and over simplification of the two compounds and how they work. JMHO as an "ex" chemist and long time 'smith. __________________ 03man(Don Voigt); Luger student and collector. Looking for DWM side plate: 69 ; Dreyse 1907 pistol K.S. Gendarmerie

10-05-2017, 10:53 PM	#2
G.T. Lifer Lifetime Forum Patron Join Date: Jun 2002 Location: Chandler Arizona Posts: 3,541 Thanks: 1,342 Thanked 3,742 Times in 1,020 Posts	I like the chemist part! I got an A in College Chem? All I remember is hydrogen is light, and gold is heavy.... And when exposed to air, white phosphorous is pretty darn impressive! ..... Thanks Don, til...lat'r....GT

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10-05-2017, 11:10 PM	#3
Rick W. User Join Date: Jun 2002 Posts: 339 Thanks: 81 Thanked 359 Times in 198 Posts	G.T. I am under the impression that most superglues are not at their best in higher heat environments, usually around 250F or so. I am pretty limited in my superglue experience, I suspect that the TDS on some of the offerings are on the net, and could be informative as to parameters; more informative than me making conversation. Some of the blue Loctite threadlockers are rated at 650F, of course, there are lesser temperature varieties of the same blue color. So sometimes specifics are relevant. I believe that threadlockers and retainers are kinda different animals of a sort. Example of 242 or 2422 as a threadlocker and 620 as a retainer. Threadlockers for threads, retainers for cylindrical objects; of course. As you might surmise, the layman only gets certain level of materials, but I have to admit that they are pretty capable for my needs. I was informed about the 620 useage in the gun business from a friend. I did experiments, trying to gain confidence in these Loctite products, by a high temp solder and 620 on two ends of a shaft with cylinders glued on. I could not break either one, and the heat resistance with a torch was right good. The 620 proved itself to me with a NECG front banded sight. Of course, I clocked it wrong some, and my.....that took a lot of heat with a torch to get off. I have to admit, that adventure, made me improve my methods with banded sights.... Time of bond varies with some of these marvelous things, ie some are quick, some give time to fool around a little. But once they set, some are right difficult to remove nicely. I believe that context of environment is everything, everything has requirements that have to be met for a successful outing. The Loctite(Henkel) site has a lot of TDS documents if you so want to peruse for your specific needs. Rick W.