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PHOSPHINE Chemical compatibility with O-rings, rubbers, & plastics

Phosphine (PH3) is a colorless, flammable, and highly toxic gas with a fishy odor. It is used in the semiconductor industry, as a fumigant in agriculture, and in the production of organophosphorus compounds. Phosphine is spontaneously flammable in air and reacts violently with oxidizers. It poses significant health risks, including respiratory and neurological damage, and can be fatal if inhaled. Symptoms of exposure include coughing, chest tightness, dizziness, and nausea. Chronic exposure may lead to lung damage and other severe health effects. Handling phosphine requires strict safety protocols, including the use of gas detectors, proper ventilation, and personal protective equipment such as respirators. In case of a phosphine release, evacuation and emergency response procedures must be promptly implemented. Phosphine cylinders should be stored in cool, dry, and well-ventilated areas, away from sources of ignition and incompatible materials.

Need PHOSPHINE 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®)Acceptable: <15-25% 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)Excellent: <15% SwellingGet 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)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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