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DICHTOMATIK O-RING HANDBOOK SECTION FIVE CHEMICAL COMPATIBILITY GUIDE CHEMICAL COMPATIBILITY GUIDE CHEMICAL COMPATIBILITY 5 DICHTOMATIK O-RING HANDBOOK CHEMICAL COMPATIBILITY GUIDE CHEMICAL COMPATIBILITY TABLES These tables are intended to assist the user in determining the suitability of various elastomers in many different chemical environments. The ratings are based on a combination of published literature, laboratory tests, actual field experience, and informed judgments. As laboratory tests do not necessarily predict end-use performance, users of DICHTOMATIK products should conduct their own evaluations to determine application suitability. NOTE: Ratings are based on volume swell which is only one indicator of elastomer fluid compatibility and may be based on the solubility parameter alone. Fluid attack on the backbone of the polymer may show up as a change in physical properties such as tensile strength, elongation at break, and hardness. Elevated temperatures and extended exposure times may create more aggressive conditions than cited in this guide. This information is believed to be reliable, but no representation, guarantees or warranties of any kind are made to its accuracy or suitability for any purpose. The information presented is based on laboratory testing and does not necessarily indicate end product performance. It is recommended that users of DICHTOMATIK products conduct their own evaluations to determine suitability for the intended application. COMPATIBILITY RATING SYSTEM RATING DESCRIPTION VOLUME CHANGE COMMENTS 1 Little or no effect <10% Elastomer may exhibit slight swelling and/or loss of physical properties under severe conditions. 2 Possible loss of 10–20% Elastomer may exhibit swelling in addition to a physical properties change in physical properties. May be suitable for static applications. 3 Noticeable change 20–40% Elastomer exhibits a noticeable change in swelling and physical properties. Questionable performance in most applications. 4 Excessive change >40% Elastomer not suitable for service. – Insufficient information n/a Insufficient information available for rating. 142 DICHTOMATIK O-RING HANDBOOK ELASTOMER ABBREVIATIONS ABBREVIATION ELASTOMER TYPE ACM Polyacrylate Rubber TFE/P Aflas® (Tetrafluoroethylene/Propylene) AU Polyurethane CR Neoprene/Chloroprene EPDM Ethylene-Propylene-Diene Rubber FFKM Perfluoroelastomer FKM Fluorocarbon Elastomer FKM-ETP ETP Based Fluorocarbon Elastomer FVMQ Fluorosilicone Rubber HNBR Hydrogenated Nitrile (or HSN) IIR Butyl Rubber NBR Nitrile or Buna-N (Acrylonitrile-Butadiene Rubber) NR Natural Rubber SBR Styrene-Butadiene Rubber VMQ Silicone Rubber 143 DICHTOMATIK O-RING HANDBOOK CHEMICAL COMPATIBILITY GUIDE CHEMICAL/ELASTOMER LISTINGS NBR EPDM HNBR CR FVMQ FKM-ETP NR SBR Chemical Medium FKM VMQ AU ACM TFE/P FFKM IIR Acetaldehyde 4422––––4442––– Acetamide 1312––––1231––– Acetic Acid Amine 1312––––1231––– Acetic Acid, 25% to 60% 33114–––2–21414 Acetic Acid, 85% 4 – – – 4 ––––––14–4 Acetic Acid, Glacial 3422444–4322424 Acetic Aldehyde 4422––––4442––– Acetic Anhydride 44234–1–4221211 Acetic Ester 4432444–4431444 Acetic Ether 4432444–4431444 Acetic Oxide 44234–1–4221211 Acetone 441444444431111 Acetonitrile 3 1 1 ––––––111––– Acetophenone 4414––––4441––– Acetyl Chloride 4143––––1111––– Acetyl Oxide 44234–1–4221211 Acetylacetone 4414––––4441––– Acetylbenzene 4414––––4441––– Acetylene 11121–111111111 Acetylene Tetrabromide 4114––––2111––– Acrylic Acid, Ethyl Ester 343444–44441–2– Acrylonitrile 44444–4–4231444 Adipic Acid 1 2 2 – 1 – 1 – 1221111 Air Below 200°F 111111111111111 Air, Oil-Containing 114111111––1442 Alkazene 4244––––2221––– Allomaleic Acid 1122––––1111––– Allyl Alcohol 2 4 1 – 2 4 2 ––––1111 Allyl Chloride 2 2 1 ––––––221––– Alum (NH3-Cr-K) 111–1–1––––1411 Aluminum Acetate 2414––––4131––– Aluminum Bromide 1111––––1111––– Aluminum Chloride 1112––––1111––– Aluminum Fluoride 1112––––1111––– Aluminum Hydroxide 2 2 2 ––––––121––– 1] Little or no effect (Volume swell <10%) 2] Possible loss of physical properties (Volume swell 10–20%) 3] Noticeable change (Volume swell 20–40%) 4] Not suitable for service –] Insufficient info 144 DICHTOMATIK O-RING HANDBOOK CHEMICAL/ELASTOMER LISTINGS NBR EPDM HNBR CR FVMQ FKM-ETP NR SBR Chemical Medium FKM VMQ AU ACM TFE/P FFKM IIR Aluminum Nitrate 2112–––––111––– Aluminum Orthophosphate 1111–––––111––– Aluminum Phosphate 1111–––––111––– Aluminum Salts 1111––––1111––– Aluminum Sulfate 1311142–1111211 Amines Mixed (Allyl, Ethyl, etc.) 4422––––4241––– Aminobenzene 4324444–42214–4 Aminobenzoic Acid 4 2 2 ––––––121––– Aminopyridine 4 4 2 ––––––341––– Ammonia 2 4 1 – 2 4 2 ––––2111 Ammonia Gas, Cold 1411––––4141––– Ammonia Gas, Hot 4421––––4241––– Ammonia, Anhydrous Liquid 2412––––4341––– Ammonia-Aqua 4211––––1111––– Ammonium Acetate 1 4 1 – 1 4 2 ––––1111 Ammonium Carbonate 3 4 1 – 1 4 2 – – 131111 Ammonium Chloride 1112142–1111111 Ammonium Fluoride 1 4 1 – 1 – 2 ––––2421 Ammonium Hydroxide 4211––––1111––– Ammonium Nitrate 13121–2––111411 Ammonium Persulfate 4 3 1 –––––1131––– Ammonium Phosphate 1 4 1 – 1 4 2 ––––1111 Ammonium Phosphate, Dibasic 1111–––––111––– Ammonium Salts 1311––––3131––– Ammonium Sesquicarbonate 3 4 1 – 1 4 2 – – 131111 Ammonium Sulfate 1 3 1 – 1 4 2 – – 111411 Ammonium Sulfide 2 3 1 – 2 4 2 – – 111412 Amyl Acetate 44144–––4441114 Amyl Alcohol 2314242–1111111 Amyl Borate 1 1 4 ––––––111––– Amyl Cabrinol 1132––––2–11––– Amyl Chloride 1144––––2111––– Amyl Chloronaphthalene 4144––––2211––– Amyl Hydrate 2314242–1111111 Amyl Hydride 11441–2–3––1444 1] Little or no effect (Volume swell <10%) 2] Possible loss of physical properties (Volume swell 10–20%) 3] Noticeable change (Volume swell 20–40%) 4] Not suitable for service –] Insufficient info 145 DICHTOMATIK O-RING HANDBOOK CHEMICAL COMPATIBILITY GUIDE CHEMICAL/ELASTOMER LISTINGS NBR EPDM HNBR CR FVMQ FKM-ETP NR SBR Chemical Medium FKM VMQ AU ACM TFE/P FFKM IIR Amyl Naphthalene 4144––––1211––– Aniline 4324444–42214–4 Aniline Chloride 423444––21214–4 Aniline Dyes 4223––––2121––– Aniline Hydrochloride 423444––21214–4 Aniline Oil 4324444–42214–4 Aniline Salt 423444––21214–4 Animal Fats 1122––––1111––– Anon 4 – 4 – 4 – 4 ––––1444 Ant Oil, Artificial 442444–––442––– Anthraquinone Sulphonic Acid 2 – 1 – 2 4 –––––1111 Antifreeze, Automotive 1111141–1211111 Antimony Chloride 11111–111––1111 Antimony Trichloride 1 – 1 – 1 – 2 ––––1111 Antimony Trioxide 1 1 1 ––––––111––– Aqua Regia 434444444321444 Argon 1112––––2111––– Aroclor 1248 3123––––2111––– Aroclor 1254 4123––––1111––– Aroclor 1260 1121––––1111––– Aromatic Fuels 2144––––2211––– Arsenic Acid 1111142–1111111 Arsenic Chloride 1 4 4 ––––––441––– Arsenic Trichloride 1 4 4 ––––––441––– Asphalt 2144––––2–11––– ASTM FUEL A 114411221311444 ASTM FUEL B 214424441411444 ASTM FUEL C 324444442411444 ASTM FUEL D 2 1 4 ––––––411––– ASTM OIL NO. 1 114112111141444 ASTM OIL NO. 2 114312211211444 ASTM OIL NO. 3 114322211311444 ASTM OIL NO. 4 2144––––2211––– ASTM OIL NO.
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