Ozone Resistant Materials


The chart below shows various materials resistance to ozone oxidation.  This chart should be used as a reference only.  Some materials will be affected by ozone differently in wet, or dry conditions.  Also, materials will react differently with higher or lower ozone concentrations.  If you have questions about the materials used in your application, contact us, we would be glad to help. 

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

The Basics

  • Ozone is highly corrosive, poor quality materials will cause ozone leaks
  • Materials will react differently to “Wet” and “Dry” ozone
  • Ozone concentrations will affect material compatibility
  • Many times, the best method to determine compatibility is to perform your own testing