I found this as insulation layer in an oven (Ariston) while trying to replace a thermocouple and it looks like asbestos to me.

Is it Asbestos? Is it dangerous?

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2 Answers 2


Where have you seen asbestos ? When I dug it out of a 50 lb bag in the back of a store room that everybody forgot; 100 % Asbestos was a fluffy grey powder . I mixed it with sodium silicate to make my own muffler cement before auto exhaust were stainless ( which are great). The material in the photo looks exactly as @ trond said ,fiberglass /mineral wool as used in appliances, etc : probably not fiberfrax which is for high temperature and more costly . For home insulation the fiberglas is usually pink.

  • 3
    +1 and of course you are strongly advising against others digging asbestos out of old bags and playing with it now, correct?
    – uhoh
    Dec 18, 2020 at 3:17
  • I did hold my breath when I stuck my head into the bag. . And I do not recommend it , one should get a car with stainless exhaust. That was 70's , I am certain that long ago the room was cleaned and asbestos properly dispose of . Dec 18, 2020 at 16:22
  • Is it safe? Googling it said it can be as hazardous as asbestos but i will trust doubling the coronamask
    – Amr Berag
    Dec 18, 2020 at 16:51
  • Fiberglas can give off irritating short fiber bits. The modern fiberglas ( 30 + years ) are very good at not having the irritating fibers break off . So it is safe. 25 years ago I put all the pink fibergas batts in my house and garage and was not bothered by any irritation from the fiberglas. Dec 18, 2020 at 19:42

This looks more like fiberglass to me. That doesn't make it safe to handle- fiberglass can give you truly nasty splinters that are next to impossible to extract.

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