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POTASSIUM (MOLTEN) Chemical compatibility with O-rings, rubbers, & plastics

Molten potassium is a highly reactive and hazardous substance used in various industrial processes, including the production of fertilizers, potassium compounds, and as a heat transfer medium in certain nuclear reactors. It is a silvery metal that becomes liquid at high temperatures. Molten potassium reacts violently with water and air, releasing heat and forming potassium hydroxide and hydrogen gas, which can ignite. Proper handling requires the use of protective gear such as gloves, goggles, and face shields, and working in an inert atmosphere to prevent contact with moisture and air. Storage should be in sealed, moisture-free containers. Disposal must follow stringent regulations to prevent environmental hazards. Due to its high reactivity, working with molten potassium demands rigorous safety protocols and trained personnel to handle emergencies effectively.

Need POTASSIUM (MOLTEN) 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®)Not Recommended: Over 40% SwellingGet a quote
FKM ETP (Viton® Extreme)Not Recommended: Over 40% SwellingGet a quote
FKM (Viton®)--- Insufficient Testing DataGet a quote
NBR (Buna-N, Nitrile)--- Insufficient Testing DataGet a quote
HNBR (Hydrogenated Nitrile)--- Insufficient Testing DataGet a quote
EPDM (Ethylene Propylene)--- Insufficient Testing DataGet a quote
Aflas® (TFE/P, FEPM)--- Insufficient Testing DataGet a quote
Silicone (VMQ, PVMQ)--- Insufficient Testing DataGet a quote
Fluorosilicone (FVMQ)--- Insufficient Testing DataGet a quote
Polyurethane (PU, AU)--- Insufficient Testing DataGet a quote
Teflon® (PTFE)--- Insufficient Testing DataGet 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
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