Materials ozone resistance chart

A common question when implementing ozone into a new application is how will ozone affect the materials we currently have in place.  Below is a useful chart showing the resistance of common materials to ozone oxidation.

A = Excellent – no effect from ozone in normal operation

B = Good – some oxidation from ozone, these materials can work with low ozone concentrations or short-term (less than 6-month) usage

C = Fair – major effect from ozone oxidation, these materials should only be used for short-term applications or very low ozone levels

D = Poor – severe oxidation from ozone will be noticed quickly.

ABS plastic B – Good
Acetal (Delrin®) C – Fair
Aluminum A – Excellent
Brass B – Good
Bronze B – Good
Buna N (Nitrile) D – Poor
Carbon Steel C – Fair
Cast iron C – Fair
Ceramic A – Excellent
ChemRaz (FFKM) B – Good
Copper A – Excellent
CPVC A – Excellent
EPDM B – Good
Fluorocarbon (FKM) A – Excellent
Hastelloy-C® A – Excellent
HDPE B – Good
Hypalon® A – Excellent
Hytrel® C – Fair
Kalrez A – Excellent
Kel-F® A – Excellent
LDPE C – Fair
Natural rubber D – Poor
Neoprene C – Fair
NORYL® B – Good
Nylon D – Poor
Polycarbonate A – Excellent
Polyetherether Ketone (PEEK) A – Excellent
Polyethylene B – Good
Polypropylene B – Good
Polyurethane A – Excellent
PTFE A – Excellent
PVC B – Good
PVDF (Kynar®) A – Excellent
Silicone A – Excellent
stainless steel – 304 B – Good
stainless steel – 316 A – Excellent
Titanium A – Excellent
Tygon® B – Good
Viton® A – Excellent

More useful information on ozone resistance can be found HERE

We also perform ozone resistance testing in our ozone chambersContact us for information about this service should you have any materials you have specific questions on.

49 thoughts on “Materials ozone resistance chart

  1. Hi, thank you for all the information on your website. It’s excellent.

    In your list of Materials ozone resistance chart. Do you know if ozone has good compatibility with ” Polystyrene ”?

    Only this material that I did not find.

    Thank you so much.

  2. Thank you for providing the material list vs. ozone. May I know if ozone has good compatibility with leather and vinyl?

    Thanks for your help

    1. Ozone in air or water at low levels is fine with both leather and vinyl.
      Ozone in water is fine with both an levels up to 20 ppm
      Ozone in air should be kept below 20 ppm with leather, and 1,000 ppm with vinyl.

  3. Hi, thank you for the information of your list. It’s very useful. May I know exactly what “short-term applications or very low ozone levels” means in C=Fair?
    Thank you so much.

  4. In Italy a fake news is spreading, someone asserts that Ozone is dangerous for electronic components and destroys computers and cards, I am convinced of the inaccuracy of what has been said, and I also did a check on your table, there is some document of some scientific company ? I want to stop this madness.

    1. We have machines that put off 74,000,000 ppm and use up to 3 machines at a time in customers homes to kill mold for 24-48 hours. I can’t tell you how much ozone actually ends up in the air because we can’t leak proof the home. What I can tell you is that in two years of doing this I have only seen 2 occasions of any type of damage. Once a clients daughter had a cheap, thin throw away toy (unknown material) that disintegrated. And once on my home we had some nitrile glove disintegrate. Both were over 48 hour runs. My machines are filled with rubber coated wires and in two years of them marinating in the ozone of every house we have done they are still in great shape.

  5. Hi, thank you for all oft he information. May I ask you, may I use IBC container (it is from PE) for ozonation in drinking water treatment ?

      1. Hi,
        As per your chart,
        for low O3 levels of 0.5 ppm, you have specified HDPE to be good for short term. Here the IBC container would have O3 level of 2 ppm in water…..
        Cheers

  6. Can i use Polypropylene filter bag for Ozone in drinking water treatment which below 1ppm? What material of filter bag is best compatible for this application?

    1. Polypropylene should work fine. Best material is dependent upon the requirement of filter, what is the filter going to filter from the water? For general TSS, a poly filter is fine.

  7. Can I use ozone water with concentration of 1,4mg/l to clean and desinfect taps and sincks mades with nickel plated?
    Thanks!

    1. Ozone levels of 1.4 mg/l may not achieve complete disinfectio of surfaces, therefore I am not sure if this will work. I would always suggest ozone levels of 2.0 ppm or greater for disinfection.

      If you are asking specifically about the ability for nickel plating to withstand low ozone levels, the answer is yes, this should be fine. 1.4 ppm ozone in water is low enough it will not harm most any materials.

    1. Only at low ozone concentrations. If using ozone from air at concentrations below 0.5% by weight, this is okay. Anything higher is bad.
      Silicone will not handle the high concentrations of ozone. It will dry out and crack.

    1. I’ve never used such a thing. Theoretically, it could work, but I would question the actual construction and nickel content. I would test this for sure and watch carefully.

    1. Yes, PEX is a polyethelyne material. This is a fine option for ozone in water at low levels. Certainly, the level of ozone in a domestic drinking water system will be well below 2.0 ppm. Therefore, this should work great.

  8. I want to disinfect my wetsuit made of Neoprene with ozone. Neoprene rated at a C level, what level and how long would you recommend.

  9. I was thinking of using ozone gas to sterilize the inside of 1/4″ PE tubing that I use for water well testing after I have tested a well with known coliform bacteria. I would use a 5-10 minute ozone purge followed by a a purge of air. Will that significantly degrade the PE tubing?

    1. Provided the ozone level remains lower than 0.5% or so, this should not be an issue.
      It would be more effective (and less potential damage to the pipe) if you used ozone dissolved in water for this sanitation process.

  10. Greetings, any data on ozone compatibility of (1) Polyacrylonitrile (An-69), (2) Polymethylmethacrylate (PMMA), (3) Polysulfone, (4) Ethylene vinyl alcohol (EVOH), and cellulosen based polymers: (5) regenerated cellulose, (6) Cellulose diacetate, and (7) Cellulose triacetate?

  11. Morning
    I have pex piping for 9 years with ozone switched on for 1 hour
    There is now a metalic taste in the water and I think the pex is breaking down

    1. PEX is normally very good with ozone. You may have a fitting that is a problem or another component. I would need more info on your water and ozone levels to offer much more guidance on this.

  12. Hello, is Monel compatible with Ozone? I see Hastelloy C has an A rating and stainless steel 316 also has an A rating. Will Monel work as well as Hastelloy C or SS316? Thanks,

  13. Hello, thank you for this useful chart.
    Would you know the rating for epoxy resistance to ozone? I can’t find it in the chart. I need to use it for application in low levels of ozone, up to 0.2 ppm, without degradation. Is it okay? Thanks.

      1. Hello, for one of the parts I have the specification EPGM 203 / VmEM2 (others are only stated as epoxy). For this question I’ll assume that other parts are of this same material.

  14. Thank you for the interesting information.
    How does Polyimide (as opposed to Polyamide) behave under Ozone Exposure?
    The product would be Polyimide (or Kapton) Tape.
    Kind Regards

  15. Hi,
    I want to use ozone in cold water for a CIP process (once/month) in a liquid sugar line (food process). My valves are butterfly valves with EPDM seating and SS316. Is EPDM ok for this application considering the limited exposure to ozone? Thanks,

    1. EPDM should be fine in this application.
      EPDM does not handle gaseous ozone, or ozone in off-gas lines well. However, EPDM handles ozone dissolved in water very well.

  16. Does stainless steel 316L breakdown ozone in air? I’m specifically asking about the effect of the SUS316 on the ozone, not the effect of ozone on the 316

  17. I have bought ozone generator sprayer for sanitizing purposes that will create max 2ppm ozone concentration. Does this concentration will have effect on metals and metal alloys? Soaking vs. just spraying?

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