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SULFUR TRIOXIDE Chemical compatibility with O-rings, rubbers, & plastics

Sulfur trioxide (SO3) is a colorless to white crystalline solid or liquid, depending on temperature, used primarily in the production of sulfuric acid, one of the most important industrial chemicals. It is also employed in the sulfonation of organic compounds, making it valuable in the production of detergents, dyes, and pharmaceuticals. Proper handling and storage of sulfur trioxide are essential to prevent accidents and ensure safety, as it is highly reactive and can cause severe burns and respiratory irritation. Safety measures, including the use of appropriate protective equipment and adherence to handling protocols, are crucial when working with sulfur trioxide. Its effectiveness in the production of sulfuric acid and its role in sulfonation make sulfur trioxide a valuable chemical in numerous industrial applications, although its use requires careful control to prevent health and environmental hazards.

Need SULFUR TRIOXIDE resistant plastics, O-rings, rubbers, and seals? Get in touch now!


Canyon Components strives to meet all customer service requests. If you need something that isn't listed below, feel free to contact a Canyon Components product and application consultant and let our knowledgeable staff help you design the perfect part for your needs.

Paint covered o-ring
MaterialPerformanceGet a quote
FFKM (CanRez™, Kalrez®, Chemraz®)Excellent: <15% SwellingGet a quote
FKM ETP (Viton® Extreme)Excellent: <15% SwellingGet a quote
FKM (Viton®)Excellent: <15% SwellingGet a quote
NBR (Buna-N, Nitrile)Not Recommended: Over 40% SwellingGet a quote
HNBR (Hydrogenated Nitrile)Not Recommended: Over 40% SwellingGet a quote
EPDM (Ethylene Propylene)Acceptable: <15-25% SwellingGet a quote
Aflas® (TFE/P, FEPM)Acceptable: <15-25% SwellingGet a quote
Silicone (VMQ, PVMQ)Acceptable: <15-25% SwellingGet a quote
Fluorosilicone (FVMQ)Acceptable: <15-25% SwellingGet a quote
Polyurethane (PU, AU)--- Insufficient Testing DataGet a quote
Teflon® (PTFE)Excellent: <15% SwellingGet a quote
Neoprene (Chloroprene)--- Insufficient Testing DataGet a quote
SBR (Styrene-Butadiene)--- Insufficient Testing DataGet a quote
ACM (Acrylic Rubber)--- Insufficient Testing DataGet a quote
Butyl (IIR, Isobutylene Isoprene)--- Insufficient Testing DataGet a quote
Butadiene Rubber (BR)--- Insufficient Testing DataGet a quote
Isoprene Rubber (Polyisoprene)--- Insufficient Testing DataGet a quote
Natural Rubber (NR)--- Insufficient Testing DataGet a quote
Hypalon (CSPE)--- Insufficient Testing DataGet a quote
Metal Piston

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