What is this paste on the wires?

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The discussion centers on identifying a hard white paste used in a servo to prevent wire movement. Participants suggest it could be RTV (Room Temperature Vulcanizing silicone), hot-melt glue, or a similar adhesive, emphasizing the importance of using electronics-grade materials due to exposed metal on the wires. The paste's melting behavior under heat is noted, and its application in assembly lines for low-voltage components is acknowledged. Comparisons are made to materials used in older CRTs, reinforcing the likelihood of it being RTV. Overall, the focus is on ensuring proper material selection for electrical safety and stability.
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paste name on the wires
This is a servo, there is some sort of a hard white paste keep the 3 wires from moving around and accidentally touching each other. It appears to melt with heat. Does anyone know what it is? My guess is putty.

Thanks in advance
 

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Looks like RTV. Hopefully they used electronics grade, since it looks like some metal on the wires is exposed.
 
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It might also be hot-melt glue. That is a nice quick solution for an assembly line. For low voltage, they could use just about anything.
 
DaveE said:
It might also be hot-melt glue. That is a nice quick solution for an assembly line. For low voltage, they could use just about anything.
+1

I have seen hot melt glue used in similar applications.
 
berkeman said:
Looks like RTV. Hopefully they used electronics grade, since it looks like some metal on the wires is exposed.
Color and texture looks like that on the old CRT's.
Same stuff? ie RTV.
 
256bits said:
Color and texture looks like that on the old CRT's.
Same stuff? ie RTV.
Looks like it to me. Here is an application where we use electronics grade RTV to stabilize a 2.4GHz radio antenna cable in a product (opened up for inspection)...

1563890216096.png
 
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