Ozone Compatible Materials

Our Rating System

Rating Description
A Excellent Ozone has no effect on these materials
B Good Ozone has minor effect on these materials. Prolonged use with high concentrations of ozone will break down or corrode these materials beyond usefulness.
C Fair Ozone will break down these materials within weeks of use. Prolonged use with any ozone concentration will break down or corrode these materials beyond usefulness.
D Poor Ozone will break down these materials within days or even hours of use. These materials are not recommended for any use with ozone.

Many of these materials were tested in-house at Ozone Solutions. Some are commonly known and rated as shown by others. All tests were performed at very high levels of ozone concentration.

For any materials not shown, please call. We may have data on file or we can use our labs to test the material for you!

Ozone Cracking

Ozone cracking in natural rubber tubing

Material Rating
ABS plastic B-Good
Acetal (Delrin®) C-Fair
Aluminum C-Fair - Wet Ozone
B-Good - Dry Ozone
Brass B-Good
Bronze B-Good
Buna-N (Nitrile) D-Poor
Butyl A-Excellent
Cast Iron C-Fair
Chemraz A-Excellent
Copper B-Good
CPVC A-Excellent - Does get brittle
Cross-Linked Polyethylene (PEX) A-Excellent
Durachlor-51 A-Excellent
EPDM B-Good - Dry Ozone
C-Fair - Wet Ozone
EPR A-Excellent
Ethylene-Propylene A-Excellent
Flexelene B-Good
Fluorosilicone A-Excellent
Galvanized Steel c-Fair
Glass A-Excellent
Hastelloy-C® A-Excellent
HDPE A-Excellent
Hypalon® C-Fair
Hytrel® C-Fair
Inconel A-Excellent
Kalrez A-Excellent
Kel-F® (PCTFE) A-Excellent
LDPE B-Good
Magnesium D-Poor
Monel C-Fair
Natural rubber D-Very Poor
Neoprene C-Fair
Nylon D-Very Poor
PEEK A-Excellent
Polyacrylate B-Good
Polyamide (PA) C-Fair
Polycarbonate A - Excellent
Polyethelyne B-Good
Polypropylene C-Fair
Polysulfide B-Good
Polyurethane, Millable A-Excellent
PVC A-Excellent - Ozone in water - does get brittle
B-Good - Ozone in Air - does get brittle
PVDF (Kynar®) A-Excellent
Santoprene A-Excellent
Silicone A-Excellent
Stainless steel - 304/316 A-Excellent
Stainless Steel-other grades B-Good
Steel (Mild) D-Very Poor
PTFE A-Excellent
Titanium A-Excellent
Tygon B-Good
Vamac A-Excellent
Viton A-Excellent
Zinc D-Poor
ozone cracking

Close-up of ozone cracking on nitrile butadiene rubber, taken with an electron microscope.

ozone cracking in diaphragm seal

Electron microscope image of a nitrile butadiene rubber diaphragm seal after exposure to ozone. Note the cracks are formed at sharp corners in the seal.

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