ozone resistant plastics
Information Center OzoneResistantPlastics 
Ozone Resistant Materials & High Performance Plastics
Grade A-B




PEEK (Polyetheretherketone)

The compatibility of Peek with ozone environments gives this material an A excellent exposure rating to ozone. Peek also possess high tensile strength, resistance to chemicals, high heat resistance up to 470 F and has low creep. The downfall of Peek is high cost, Peek is very expensive and in cases where strength and heat resistance are not required more economical materials should be considered. 



Polycarbonate

Polycarbonate is another ozone safe plastic with A excellent rating. The glass filled grades have tensile strength approaching that of Peek. They are slightly less heat tolerant but possess excellent insulating properties. Polycarbonate can also be molded to be clear, making an excellent choice for gauge faces or see though connectors. It has good creep resistance and has a temperature independent dielectric constant. 



PVDF

PVDF is another Ozone safe mouldable plastic which carries an A excellent rating in ozone environments. It does not posses the tensile strength or temperature range of some other materials listed but never the less an excellent choice in applications that do not require those properties.



PTFE 

PTFE is an excellent ozone plastic. it carries an A excellent rating for ozone exposure. PTFE is ideal for a design exposed to extreme temperature variations. Teflon is tolerant from temperatures of 100 deg F to over 500 deg F. PTFE also exhibits excellent chemical resistance in general. The major downfall of PTFE is that it is mushy in texture and is not strong. However PTFE is used an excellent chemical resistance coating over stronger materials. 
  •  (FEP) Flurinatedethylenepropylene- chemical compound (FEP) 
Another AAA* Excellent chemical resistant material for plastics. 



CPVC Chlorinated PVC

Chlorinated PVC has an A Excellent rating and is an ozone safe plastic. it exhibits very little if any water absorption which can make an ideal choice for diffusion or venturi systems which entrain ozone gases directly into water.


Grade B/C Plastics



PVC (Polyvinylchloride)

PVC carries a B good rating when used in an ozone environment. AB Rating indicate good resistance to ozone but minor effects may occur such as slight corrosion and discoloration.


Polyethylene (PE) 

Polyethylene carries a dual rating a B good in water and a C (fair) rating in ambient air. Grade C materials are not recommended for continuous use in ozone environment. However in water based ozone generating systems it makes a safe choice for bearing surfaces. HDPE (High Density polyethylene) has an A excellent rating in ambient air.   


ABS (Acrylonitrile Butadiene Styrene)

Carries a B good rating when use in ozone environments subject to minor discoloration and corrosion. ABS however is widely used in mechanical drive parts as it possesses excellent toughness and impact resistance. used in ozone systems where concentrations are low it makes an excellent choice of material. 


Several common plastics and rubber materials carry a grade C-D rating are not recommended for continuous exposure to ozone and can suffer softening, loss of strength, discoloration, complete corrosion, cracking and swelling. 

Grade A excellent plastics have been tested in dry air conditions over a constant 48 hour period at 10% ozone concentration of (100,000 micrograms per Minuit). Not all of the materials above can resist high concentrations (20%) ozone concentrations. 

Grade A plastics should not be classified as lifetime use. Replacements of these materials should be 6-12 months depending on moderate to heavy use. 
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