cartridge heater temperature ratings?

[ftransform]

I would like a cartridge heater which could go up to 400 degrees C. Ebay is littered with cheap cartridge heaters from hong-kong but none of them provide any kind of maximum temperature specification.

http://www.ebay.com/sch/Business-Industrial-/12576/i.html?_from=R40&_nkw=cartridge+heater&_pgn=2&_skc=50&rt=nc

Will these work?

I would like a solution that does not cost 20+ dollars a heater mainly.

[vlf3]

What's your intended application for 400c !   

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What's your intended application for 400c !   

Lol, I thought I could slide a bunch of those round metal can heatsinks I have lying around over one and use it as a home made hot air gun with an air compressor and an AL tube

[vlf3]

Those cartridge heaters are not ideal for your application; in all honesty, you would be better to buy a hot-gun or a paint stripper !

[Rufus]

Lol, I thought I could slide a bunch of those round metal can heatsinks I have lying around over one and use it as a home made hot air gun with an air compressor and an AL tube

I doubt it is sensible building your own but if you insist spare parts will work a lot better and come with a thermocouple for about the same price.

www.ebay.com/itm/110V-Hot-Air-Gun-Heating-Element-Core-for-SAIKE-898D-/280547924240

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well regardless of my folly I still want to know what those things are rated for, just in case

 I just wanted to make a modular lab compressor system (pickup tool, venturi cooling pipe (EVEN THOUGH I HAVE DUSTOFF) (http://en.wikipedia.org/wiki/Vortex_tube) (also doubles as smoke remover), solder pickup tool, hot air gun and solder paste dispenser.

 

I know I can buy all this stuff cheap but it is more for fun then anything. I already own a proper hot air gun... it's just fun to misuse things you know? Plus customization, like foot pedal solder sucker or blower control is kind of neat.

[SeanB]

The ones meant for plastic extrusion are normally rated to about 350C, as most extruders will operate at around 150-300C depending on the particular machine. The leads however are often only rated to 200C, as they are going to be outside the heater blocks and this is a cheaper insulation to make in a flexible form. Somw will operate to 600C, but then you will find the leads are made from ceramic beads threaded on the wires.

[chickenHeadKnob]

You do know that vortex tubes can be hellishly loud ? Ha .. what.. what .. can't hear you 

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You do know that vortex tubes can be hellishly loud ? Ha .. what.. what .. can't hear you 

Sounds like alot of guys here can use them for their wives then!

[NiHaoMike]

What about glow plugs?