High-Temperature Adhesive for Hotplate

Look at these

http://www.mcmaster.com/ctlg/DisplCtlgPage.aspx?ReqTyp=CATALOG&CtlgPgNbr=3334&RelatedCtlgPgs=3314,3315,3316,3322,3328,3334&term=High-Temperature%2bAdhesives&sesnextrep=700425910647962&ScreenWidth=1024&McMMainWidth=817

I noted the phrase can be used for thermal insulation . I would not use this between the thermocouple and the hot plate. There would be a temperature loss between the two which means the thermocouple would be inaccurate. Now if you could hold the thermocouple on the hotplate and cover it with this stuff, it would probably work.

Bill

Sauereisen cement will do it.

Surely will.

So also will Fireclay putty

Used Sauereisen Cement for just that purpose 35 years ago.

Any of the adhesives mentioned will do a fine job. You should drill a hole in the hot plate(if there isn't one already) at least 10 thermocouple diameters deep and pack the thermocouple in the hole (which is called a thermowell) with the adhesive. This will provide improved accuracy and will minimize tensile stress on the adhesive.

If you just need a downhome solution,get some muffler assembly paste from your auto parts shop.It sets like a rock,sticks like **** to a blanket, and in thin layers doesnt bubble up. I use it to repair hotties from hair straighteners to IR heating elements.

Try the one that is most often used in this type of application (and also one of the oldest adhesives around)--- Sodium Silicate. It is most commonly available as the liquid part of muffler patch, fireplace brick adhesive, fireplace crack patch, boiler rope insulation adhesive, etc. It is available in small pouches, 1-2 oz tubes, 14 oz cartridges, all the way up to tank wagons and tank cars.

Its usually applied with some clamping or other method of keeping the item to be glued in place until it sets. Low heat applied for several hours to solidify the adhesive and then high heat applied overnight to cure the adhesive.

Good luck,

old salt, a former adhesives plant manager