Chemical Resistance

Small black round-cord O-Ring beside a clear beaker of pale amber PAG lubricant, modern rotary screw compressor softly blurred in the background

Ucon Lubricant 50-HB-260 O-Ring Compatibility: Which Compounds Hold Up

Ucon Lubricant 50-HB-260 O-Ring guide for PAG compressor, hydraulic, and metalworking fluids: chart ratings, which elastomers to use, and which lack data.

Clear beaker of amber calcine process liquor with a small black O-Ring submerged in the liquid, mineral processing plant in the background

Calcine Liquors O-Ring Compatibility: Which Compounds Hold Up

Calcine liquors O-Ring guide for mineral processing and metallurgy: chart ratings, which elastomers hold up in aqueous calcination circuits, and which to avoid.

Clear unmarked beaker of aqueous solution with a small black O-Ring submerged in the liquid, water-treatment plant in the background

Ammonium Sulfite O-Ring Compatibility: Which Compounds Hold Up

Ammonium sulfite O-Ring guide for water treatment, pulp and paper, and photo chemistry: chart ratings, which elastomers to use, and which to avoid.

Clear glass beaker of naphtha with a black O-Ring falling into the liquid

Naphtha O-Ring Compatibility: Which Compounds Hold Up

Naphtha (petroleum solvent) O-Ring guide: which elastomers swell or fail, why FKM and nitrile usually win, and how to read the chemical compatibility chart for VM&P and solvent naphtha.

O-Ring Chemical Compatibility Chart

The best and easiest free O-Ring chemical compatibility chart on the internet. Search 2,000+ fluids against Nitrile, Viton®, EPDM, HNBR, Silicone, FFKM, PTFE, and more. Ratings for generic commercial compounds at room temperature (~70°F) unless noted.

O-Ring Chemical Compatibility

How to pick an O-Ring compound for your fluid: quick media rules, rating symbols, and a full chemical compatibility chart.