Is self fusing heat resistant silicone tape ok to use on harness?

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Label says its heat resistant to 500 F and aviation quality. Claims to remain flexible while making a water resistant shield. I need to wrap by wiring harness and re-wrap some individual wires and a splice. Do you think this stuff will work or is there something better?
 
The silicone tape works very well. I've used it on multiple projects on my vehicles over the past few years. The tape has lasted well with no signs of deterioration etc. I've used it in cab and in the engine bay of my 4wd in australia and it's seen some nasty conditions and all is good.

For heatshrink I prefer to use the type that has the internal adhesive liner (sorta/kinda hot melt glue). You apply heat, the stuff shrinks, you continue to apply heat and the liner melts and bonds to the wire & joint providing a weather tight seal. Waytekwire has reasonably priced adhesive lined heatshrink.

I use the silicone tape on wiring that doesn't allow for the heatshrink tubing to be slipped on, otherwise I prefer the heatshrink tubing.

cheers,
george.
 
The heat shrink with adhesive is actually pretty cheap on E-bay from genuinedealz.
They sell it by the foot and ship fast. Used their stuff on my battery setup. I have no affiliation with them, but was pleased with their fast shipping on all the stuff I bought from them. Plus they are the cheapest.

Never used silacone tape. Where do you buy it? And what kind of applications they are used for?
 
I love rescue tape (and the generic knock offs), and use it all the time. I keep a roll or two in my tool box, and there's a roll in my bug out bag as it has infinite uses for medical/survival (have used it to tape off a cut on my hand where a normal bandage wouldn't stay on, and for taping two fingers together).

Couple of down sides to it....

One is of course the cost. It's not nearly as cheap as heat shrink, electrical tape, etc. (Though cheaper than the 3M tape linked to above).

It doesn't do that well at holding pressure in, especially if wrapping while the leaking hose is under pressure. Best luck I've had with that is make sure there is no pressure in the hose, wrap it as tight and as much as possible, wait a bit for it to fuse itself together, then start it back up and pray it holds. At the worst, however, it will slow the leak, which is about all you can hope for anyway.
 
Thanks for the info. I bought some silicone tape, heat shrink and some thermo tec tape and sleeves. It's all going under the hood...especially around the EGR.
 
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Thanks for the info. I bought some silicone tape, heat shrink and some thermo tec tape and sleeves. It's all going under the hood...especially around the EGR.

Just an FYI, while this stuff is supposed to be good up to 500*, I'd probably use something more designed for heat. The EGR pipe gets insane hot, hot enough to burn through the OEM heat shielding. :eek:
 
Just an FYI, while this stuff is supposed to be good up to 500*, I'd probably use something more designed for heat. The EGR pipe gets insane hot, hot enough to burn through the OEM heat shielding. :eek:

The thermo tec is good to 1100 contact and 2000 radiant...and I'm putting the sleeves over the tape. You think it'll be ok?
 
Just make sure you have a good insulation, The silicone may transfer the heat to the harness.
 
Am I better off skipping the silicone and just using the thermo tec sleeves?
 
It depends on how easy it is to install sleeves or shrink wrap. Self sealing silicone tape (guide line, F4, etc) all work really well in areas that you can't sleeve or need to insulate wiring due to heat. When I inspected the injector wiring and broke apart the brittle plastic I wrapped it in high temp F4 tape to protect it. It's good stuff, if you have a source give it a try.
 
[QUOTuyE=IBCRUSN;7006490]It depends on how easy it is to install sleeves or shrink wrap. Self sealing silicone tape (guide line, F4, etc) all work really well in areas that you can't sleeve or need to insulate wiring due to heat. When I inspected the injector wiring and broke apart the brittle plastic I wrapped it in high temp F4 tape to protect it. It's good stuff, if you have a source give it a try.[/QUOTE]

that's what I hot...the f4. I wrapped the wiper motor wires after I did a few splices. It fused very well and so far in happy with it. Still in going to wrap it with thermo tec.
 
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