Polymers such as PTFE (polytetrafluorethylene or Teflon), PEEK (polyetheretherketone), EPDM (ethylene propylene cliene monomer) rubber, Viton, EPR (ethylene propylene rubber), Nylon, Nitrile rubber, and perfluoroelastomers are commonly employed in super critical CO 2 (sCO2) energy conversion systems. conveyed butyl cpe epdm csm tpc-et natural neoprene nitrile nylon sbr tpv ptfe uhmw urethane fkm xlpe aluminum sulfate (aq) e e e e g e e e e g e e e g e e alums-nh3-cr-k e e e e e e c e e e g e amines mixed g g x g g x g x x amino xylene g c c aminobenzene g c aminodimethylbenzene g c e Satisfactory to 72 F. B Minor effect Good 2. If you have any questions about the compatibility of these chemicals with Perfluoroelastomer, Viton ETP, Aflas TFE/P, Viton FKM, EPDM P.C., Buna-n, Silicone or Fluorosilicone please talk to one of our engineers. EPDM - (EPM) is an elastomer made from ethylene-propylene diene monomer. If your temperature differs from this, it may affect the compatibility of the fluid with the given pump materials by accelerating the reaction. CHEMICAL COMPATIBILITY CHART . The data table below is an application guide, and indicates the . Carbon Dioxide (wet) AC A Carbon Disulfide2 B AC DDAB Carbon Monoxide ABA C Carbon Tetrachloride2 1 B A CA DD C Carbonated Water B AD A Carbonic Acid B AAD B Catsup AD CB A Chloracetic Acid2 DC A DA B Chloric Acid DA D Chlorinated Glue ADC A C B A No effect Excellent 1. Polypropylene offers good resistance to non-oxidizing acids and bases, fats and most organic solvents. Choosing the right material based on chemical compatibility minimizes costly failures. Designations: 0 - good compatibility, 1 - compatibility on the verge of permissible; 2 - non-compatibility. Acetamide. Markez O-Rings FFKM. The compatibility of rubbers and the It is extremely important that all gas control equipment be compatible with the gas being passed through it. EPDM is a non-toxic, FDA-approved synthetic material that has gained widespread In general, polypropylene is chemically less resistant than polyethylene. EPDM is an ASTM D1418 designation of ethylene-propylene. This will help you select and design the correct rubber product for your application. Polyurethane O-Rings. EPDM . Fluorosilicone O-Rings FVMQ. This guide will help in assessing the impact different chemicals may have on EPDM rubber. The data provided for the chemicals is at 70F (21C), unless otherwise noted. pump and pumping systems must be chemically compatible. Urethane's resistance to chemicals is affected by the chemical's concentrations, temperature and duration of contact with the urethane. CHEMICAL COMPATIBILITY CHART . Kalrez O-Rings FFKM. Exceptional compatibility. The eco-friendly insulating medium C[5] F[10] O gas has attracted the attention of many researchers due to its superior environmental protection and insulation properties. C4F7N (fluorinated nitrile) has been introduced as a remarkable substitute gas for the greenhouse gas SF6 (sulfur hexafluoride) which is used in EPDM (Ethylene Propylene Diene Rubber) EPDM shows good heat, ozone and aging resistance. P.V.C. Chemraz O-Rings FFKM. TFE/P. At elevated temperature, polypropylene can be dissolved in nonpolar solvents such as xylene, tetralin and decalin. The swelling response of EPDM is somewhat counter intuitive given its non-polar composition and CO2s non-polar configuration. 24 Symbols guide NBR Nitrile Rubber EPDM Ethylene-Propylene FKM Fluorocarbon (Viton) TPU Polyurethane HNBR Hydrogen. Chemical Compatibility for EPDM O-Rings: 1 Acetaldehyde 2 Acetamide 3 Acetate Solvent 4 Acetic Acid 5 Acetic Acid 20% 6 Acetic Acid 80% 7 Acetone 8 Acetylene 9 Adipic Acid 10 Alcohols = Amyl More items If the wrong material is chosen, premature failure and a short service life for the seal can be expected. Poor compatibility with moderate effect, possibly softening and swelling, loss of strength - not recommended. EPDM Basics: Chemical Compatibility and Important Benefits You Need to Know. Acetic Acid. Gasket Chemical Compatibility Chart CheA Minor Effect B Moderate Effect C Static Only D Not Recommended * Insufficient Data Chemicals Natural Rubber Styrene- Butadiene (SBR) Butyl IIR EPDM, EPM Nitrile NBR Neoprene Hypalon Silicone Fluoro- elastomer (Viton) Acetaldehyde B C A A D C C B D Acetamide D D A A A B B B B Acetic Acid, Glacial B B B A C D C B C Acetic Acid, The surface of EPDM rubber will produce oily substances and a large number of crystal particles, which will cause its mechanical properties to deteriorate and shorten its service life. EPDM Hastelloy -C PVDF (Kynar) Hytrel (TPE) Kel-F (PCTFE) HDPE LDPE Natural Rubber Neoprene (CR) Noryl (PPO) Nylon (PA) Polycarbonate (PC) Polypropylene (PP) PTFE PVC Silicone (VMQ) Titanium Tygon Viton (FKM) Acetaldehyde A A D A C B A A D C C D A A B A C C C C NA A C A A D D A A D D O-rings and gaskets made from these EPR, EPT, EPDM Buna-N, Nitrile, NBR Hydrin Neoprene Hypalon Urethane, Polyurethane Polysulfide Silicone Fluorosilicone Fluoro Elastomers LEGEND A - RECOMMENDED B - MINOR TO MODERATE EFFECT C - MODERATE TO SEVERE U - UNSATISFACTORY BLANK - INSUFFICIENT DATA AN-VV-O-366b Hdry. FKM. Carbon Dioxide (dry) B-Good: Page 3 of 10 Kelco 12.02.09: arbon Dioxide (wet)C Here is the rubber compatibility chart that rates all popular rubber materials that comes into contact with various chemicals. Thus, we also observed a greater absorption of CO2 by HNBR, a non-polar elastomer. Compatibility with elastomers. No information. Fluid U U U U A B B B A U A A Ansul Ether U U C C C U U B A U C U FKM (viton) FKM has excellent rebound as well as weather resistance through a wide range of temperatures. Carbon Dioxide 1 2 1 2 1 1 1 Carbon Monoxide 1 1 1 1 2 1 1 Carbon Tetrachloride 3 4 2 4 4 3 1 1 Carbonic Acid 2 1 1 1 1 1 1 1 Elastomer Chemical Compatibility. However, when consideration is given to the doubly degenerate bending of the CO2 molecule, the polarity is in fact different. Chemical Compatibility for EPDM Seals and Gaskets for Plastic Pipe Systems Note that the effect of any chemical on EPDM may be dependent on factors such as temperature, pressure, concentrations, abrasiveness etc. NEOPRENE . Hydrogen Peroxide Material Compatibility Chart All wetted surfaces should be made of materials that are compatible with hydrogen peroxide. The interaction mechanism between EPDM, used as a sealing ring in GIE, and C4F7NCO2 was explored and relevant results provide important guidance for the engineering application of the C4f7N gas mixture. Not recommended for any use. It is compatible with water, alcohol, and weak acids but is not compatible with mineral oils, petroleum greases and fuels. Carbon Dioxide, Wet Carbon Dioxide, Dry China Wood Oil (Tung Oil) Corn Oil Detergent Solutions Crude Oil The use of a device that is not compatible with the service gas may damage Use this rubber chemical resistance chart to make sure that the elastomer or O-ring seal you choose will be compatible with the particular environment. EPDM has excellent weathering characteristics and good elongation. In addition to resistance against polar fluids and solvents, EPDM offers superior compatibility to these chemicals at elevated temperaturesetting EPDM apart from other compounds. EPDM offers far more advantages than chemical resistance. In addition they also exhibit high levels of elasticity, good low temperature behaviour as well as good insulating properties. Gas Compatibility Chart (Ethylene Propylene Rubber) and EPDM. Use this chart as a quick reference guide to help you with your selection of elastomers for your specific application. September 20, 2021. Heres a closer look at the chemical compatibility and benefits of EPDM rubber: In the medical and automotive industries, rubber parts are often required to seal against harsh chemicals and fluids. EPDM seals offer excellent protection against: The data table below is an application guide, and indicates the . Acetate Solvent. Consideration must be given to the basic compatibility between the elastomer seal/gasket and any fluids that it may be in prolonged contact with. Chemical/Media. Our products can be exposed to a huge variety of chemicals. This data has been compiled by other reputable sources and is to be used solely as a guide in selecting EPDM or determining it's durability and resistance to chemical exposure. As the laboratory research by "Du Pont" company has showed (see table up), elastomers, which successfully operated in combination with R12, have, as a rule, good compatibility with average pressure service blends (R401A, R401B and View Minor Rubber's extensive chemical compatibility chart. The data given should be used cautiously, and as a guide only. resistance of the specific thermoplastics we use in the construction of our products, to common chemicals. Chemical Compatibility for EPDM O-Rings: (partial list - call factory for further selections) Acetaldehyde. While EPDM is compatible with a wide range of chemicals, it offers no resistance to hydrocarbon fluids. Additionally, EPDM seals absorb oil and gas, making them a weak defense in oil and gas applications. Want to talk more about EPDM? Contact an engineer today. The operating temperatures of applications for EPDM range between -45 C/-49 F and +150 C/+302 F Satisfactory to good compatibility with insignificant effect, minimal marking or corrosion. Our products. The wetted area or surface of a part, component, vessel or piping is a surface which is in permanent contact with or is permanently exposed to the process fluid (liquid or gas). Our products can be exposed to a huge variety of chemicals. Unless otherwise noted, the chemicals listed below are at full concentration and 70F . Explore some of the most common sealing materials we offer here. If you are unsure of the compatibility of your chemical, we We're proud to offer the world's largest inventory of readily-available and highly customized sealing solutions. Our specialty is solving sealing problems for original equipment manufacturers. Feel free to contact us with your questions. Viton O-Rings FKM. Welcome to our Rubber Chemical Resistance Chart. The compatibility data* shown on the following pages has been compiled to assist in evaluating the appropriate materials to use in handling various gases. The melting point of polypropylene is 160C / 320F) To form EPDM, a copolymer of ethylene and propylene (EPR) is combined with a third commonomer known as diene. EPDM O-Rings. TFE/P (aflas) TFE/P has very good electical insullation properties as well as EPDM has good abrasion and tear resistance (224F). Nitrile Rubber CR Neoprene FMQ Fluoro-Silicone MQ Silicone IIR Butyl BR Butadiene IR Isoprene SBR Styrene-Butadiene FFKM Perfluoroelastomer (Kalrez) ACM Polyacrylate PTFE Polytetrafluorethylene This guide shows the resistance of polyurethane materials in contact with various chemicals. In this paper, ENB-EPDM and DCPD-EPDM were chosen to perform the compatibility experiment with the C 4 F 7 N gas mixture.
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