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AQUA REGIA Chemical compatibility with O-rings, rubbers, & plastics

Aqua regia is a highly corrosive mixture of concentrated nitric acid and hydrochloric acid, usually in a 1:3 ratio. It is used to dissolve noble metals like gold and platinum and in certain analytical chemistry procedures. Aqua regia releases toxic fumes and is highly dangerous to handle. Proper safety measures, including the use of personal protective equipment (PPE) and proper ventilation, are essential when working with this chemical.

Need AQUA REGIA 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®)Acceptable: <15-25% SwellingGet a quote
FKM ETP (Viton® Extreme)Acceptable: <15-25% SwellingGet a quote
FKM (Viton®)Acceptable: <15-25% SwellingGet a quote
NBR (Buna-N, Nitrile)Not Recommended: Over 40% SwellingGet a quote
HNBR (Hydrogenated Nitrile)Poor: 25-40% SwellingGet a quote
EPDM (Ethylene Propylene)Poor: 25-40% SwellingGet a quote
Aflas® (TFE/P, FEPM)Poor: 25-40% SwellingGet a quote
Silicone (VMQ, PVMQ)Not Recommended: Over 40% SwellingGet a quote
Fluorosilicone (FVMQ)Poor: 25-40% SwellingGet a quote
Polyurethane (PU, AU)--- Insufficient Testing DataGet a quote
Teflon® (PTFE)Excellent: <15% SwellingGet a quote
Neoprene (Chloroprene)Not Recommended: Over 40% SwellingGet 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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Groove Design References

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Coatings, Packaging, & Other Services

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Custom Parts & Custom O-rings

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