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

Alums are a class of double sulfates containing a monovalent cation (such as potassium, sodium, or ammonium) and a trivalent cation (such as aluminum, chromium, or iron). Common examples include potassium alum and ammonium alum. Alums are widely used as coagulants in water treatment, mordants in dyeing and printing textiles, and in the manufacture of paper, leather, and cosmetics. They are also employed in baking powder and as astringents in medicinal applications. Alums are relatively non-toxic but can cause skin and eye irritation. Proper handling and storage are essential to ensure safety.

Need ALUMS 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)Excellent: <15% SwellingGet a quote
HNBR (Hydrogenated Nitrile)Excellent: <15% SwellingGet a quote
EPDM (Ethylene Propylene)Excellent: <15% SwellingGet a quote
Aflas® (TFE/P, FEPM)Acceptable: <15-25% SwellingGet a quote
Silicone (VMQ, PVMQ)Excellent: <15% SwellingGet a quote
Fluorosilicone (FVMQ)Not Recommended: Over 40% 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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Groove Design References

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Custom Parts & Custom O-rings

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