(73 F), Concentrated H2SO4 @ 70 C It is important that you analyze all aspects of your application. High Temp O-Ring & Low Temp O-Ring Ranges for Common Materials Temperature ranges are recommendations with a margin of safety when setting the general operating temperature of common elastomers. Want to get more information about our products? Resistant to: Most chemicals, excluding alkali metals, fluorine, a few fluoro-chemicals such as chlorine tri-fluoride and oxygen difluoride, Not recommended for: Applications requiring O-Ring stretch and compression. Analysis and process instruments: separators, diaphragms, cylindrical fittings, hoops, gaskets, etc. Viton O-rings have an extremely wide temperature range -50C to +205/230C (-15F to +400/440F) Low compression set and low gas permeability Our Office is Closed for the Day. There are four major families of Viton fluoroelastomers: A, B, F, and ETP, each with its own unique performance characteristics. This popular o-ring material family comparison shows basic rubber material family properties and performance plastic properties. The material designation given by the ASTM to this copolymer is FKM. Set: O-Rings, 70 Hrs @ 200 C (392 F), Fuel C/MeOH (85/15) @ 23 C Weve spent decades gathering first-hand knowledge of how different material O-rings perform under different conditions. This isn't desirable since the job of an . If you continue to use this site we will assume that you are happy with it, Aftermarket & Production Kitting Services, BotDetect CAPTCHA ASP.NET Form Validation. It is important that you analyze all aspects of your application. There are colored and translucent materials as well as internally lubricated materials to meet special needs. Originally developed by DuPont (under the brand name Viton, now owned by Chemours), FKMs are today also produced by many companies, including: Daikin (Dai-El),[4] 3M (Dyneon),[5] Solvay S.A. (Tecnoflon),[6] HaloPolymer (Elaftor),[7] Gujarat Fluorochemicals (Fluonox),[8] and several Chinese manufacturers. Global O-Ring and Seal carries a broad inventory of Viton o-rings, in Standard AS568 and metric sizes. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); ADDRESS 70 Bearfoot Road Northborough, MA 01532. The general accepted range for o-ring use is approximately -75 degrees and 620 degrees Fahrenheit. Recommended O-ring application service temperature limits for basic polymer types. Food and pharmaceutical, because of their low degradation, also in contact with fluids; This page was last edited on 22 February 2023, at 06:23. A detailed list of fluids/chemicals with their compatibility ratings for use with the most common O-Ring materials. Viton is also known as FKM made of fluoroelastomer one of the most versatile and widely used sealing materials. In general, depending on a number of factors including grade of o-ring and precise application, the Viton seal working temperature range is held to be between -26 C and +205 C, although they can withstand higher temperatures . FKM is a family of fluorocarbon-based fluoroelastomer materials defined by ASTM International standard D1418,[1] and ISO standard 1629. There are FDA, USP Class VI, Nuclear Grades and compounds that meet AMS, Mil standards as well as other specifications. Any residue must be handled using protective equipment. As a rule of thumb, temperature determinations should be figured as closely to the seal location as possible. FKM, FPM (Europe), Fluoropolymer, Fluoroelastomer. If you have questions about which material is ideal for your O-ring application or even whether the material youre currently using is correct for your application,reach out to us today. . But for short working periods it will take even higher temperatures. For GLT-type, the low temperature can reach as low as -40C. Once a high-end and low-end temperature are determined, knowing how much change the material can withstand is the next big step in purchase decisions. Viton ETP is usually applied in the chemical industrial field. This property is determined by the type and the relative amounts of the specific monomers that make up the polymer. There are numerous compound variations designed for specific applications. Thats where Finite Element Analysis (FEA) can help you save valuable time and money in your search. Full operation at 450F will shorten parts' lifetime more than full operation at -15F. Resistant to: Refrigerants (freons, ammonia), high aniline point petroleum oils, mild acids, and silicate ester lubricants, Not recommended for: Phosphate ester fluids and ketones. Viton GLT has a more broad usable thermal range of -45 C to 275 C and outstanding in aggressive HTS-type oils, applied in aerospace applications. We offer the largest inventory of specialty and standard sealing solutions backed by best-in-class technology, service and support. Viton O-Ring Temperature Range. Low gas permeability, low compression set. Hardness: 55 to 60 . For Use With; Acetic Acid: Acetone: Air: Ammonia: Ammonium Hydroxide: Animal Oils: Bases: Benzene: . Commonly employed in various gasket, o-ring and other rubber sealing solutions, Viton has become a reliable material for automotive seals, transportation fuel applications and aerospace seals, pumps and valves. Most projects dont sit within a few degrees throughout the work fluctuations are going to be a part of the application, and sometimes those swings can be dramatic and potentially compromise the functionality of the o-ring. Its important to note, however, that standard grades of Viton do not offer the same resistance to steam and ethanol fuels and should not be used in these applications. This eliminates incorrect readings or information that may be influenced by outside factors or ambient heat that exist within the project space but do not impact o-ring performance. Fluorocarbon elastomers are highly fluorinated carbon-based polymers used in applications to resist harsh chemical and ozone attack. The Viton O-ring withstands a condition of 230 C 24 h. Viton is a common name for the copolymer of hexafluoropropylene and vinylidene difluoride. This can be damaging to a seal, since excessive swell can cause premature failure. [3] All FKMs contain vinylidene fluoride as a monomer. High Temperature Performance F (C) (Basic Static Applications), Low Temperature Performance F (C) (Basic Static Applications). This helps designers and engineers to balance the fluid resistance and low-temperature flexibility of the final vulcanization. Ultra-low temperature FKM commercial grade Wide chemical resistance including H2S and Oxygenated fuels. PTFE seals are often used in food, pharmaceutical, and medical industries. Performance Differences Between Major Families of Viton Fluoroelastomers, Fluid Resistance: % Volume Increase After 168 Hours. This guide is intended for general reference use only. Both Viton and nitrile O-rings have good abrasion and tear resistance, but nitrile will have higher resistance. Excellent resistance to acids, fuels, mineral and vegetable oils and greases, aliphatic, aromatic and chlorinated hydrocarbons, non-flammable hydraulic fluids (HFD) and many organic solvents and chemicals. Resistant to: Petroleum base oils and fluids, some phosphate ester base fluids, silicone and silicate ester base lubricants, acids and halogenated hydrocarbons. In order to accommodate a large variety of applications, manufacturers make O-rings and seals using various elastomers with different physical and chemical properties. Chemical Processing Industry Seals (CPI Seals), Chemical Processing Industry O-rings (CPI O-rings), Refrigerant System Seals (Freon O-ring Compatibility, R22 Refrigerant, R134 Refrigerant, R410A Refrigerant, Ammonia O-rings), Aerospace O-rings and Aerospace Rubber Sheets (SAE Compliant O-rings, AMS O-rings, MIL O-rings). Actual temperature range of a compound in an end-use application is highly dependent on part type, hardware configuration, applied forces, chemical media, pressure and thermal cycling effects, and other factors. The shelf life for industrial seals varies among different materials. Additionally, temperature highs and lows are often given in terms of prolonged functional abilities, which may raise the minimum or reduce the maximum this is important to remember, as your o-rings will not be used once or twice in quick bursts but will be counted on for extended time periods under these heat conditions. Applications & Standards for Viton O-Rings FKM has good resistance to petroleum products and a wide spectrum of chemical compatibility. This wide spectrum is due to the materials from which o-rings can be manufactured. Discover how metal detectable o-rings, seals, and gaskets help manufacturers in the food and beverage industry enhance operations while meeting safety standards and regulations. Allied Metrics specializes in providing high-quality sealing solutions for those in need. With exceptional chemical resistance, Viton offers swell resistance in high octane and oxygenated fuel blends. For demanding applications, please provide all the details to our application engineers for a recommendation. Not only do these parts need to withstand high temperatures, but they also must hold up against corrosive chemicals and minerals. One of the first steps in designing a rubber seal is choosing the right material for your application. Temperature Range for Viton O-Rings The temperature range is generally -15to 400F. Standard Low Temp: -26C (-15F) Standard High Temp: 232C (450F) SPEC SHEET: Viton 75 Durometer. Choosing which Viton product to use for any given application will be determined by the end-use service. This material is also called Buna or NBR. O-rings are doughnut-shaped rings, often made of rubber, plastic or another polymer, which are used to prevent fluid or gas loss in a machine. Nitrile is another material that is commonly used to fabricate O-rings. Low molecular weight esters and ethers. Despite the abovementioned characteristics, experts do not recommend silicone O-rings for dynamic applications. Viton o-rings from allorings.com have great chemical and temperature resistance. Comp. Therefore, all containers should be opened and used only in well-ventilated areas. Standard o-ring tolerance charts, x-ring tolerances, molded rubber tolerances, extruded tolerances and rubber sheet tolerances. (March 2021) FKM is a family of fluorocarbon -based fluoroelastomer materials defined by ASTM International standard D1418, [1] and ISO standard 1629. Download Viton 75 Information in PDF SPECIFICATIONS MET Actual temperature range of a compound in an end-use application is highly dependent on part type, hardware configuration, applied forces, chemical media, pressure and thermal cycling effects, and other factors. Nitrile (Buna), Neoprene, Ethylene Propylene (EPDM Rubber), Silicone, Fluorocarbon (Viton), and PTFE (Teflon) are among the most commonly used compounds for O-rings and seals. Compare FKM (Viton) vs Silicone o-ring properties, temperature ranges, resistances, and limitations. . Additionally, it is also compatible with many types of hydrocarbons. Copyright 2018-2023 Wyatt Seal, Inc. All Rights Reserved. EPDM has a spotless reputation in the sealing world because of its excellent resistance to heat, water and steam, alkali, mild acidic and oxygenated solvents, ozone, and sunlight (UV). Welcome to the world's largest database of specialty and standard sealing products. aromatic and also special chlorinated hydrocarbons. Viton o-rings from Marco Rubber offer excellent compatibility with a range of chemicals, oils and resist high temperatures up to 400F. FKM and Viton material types for high temperature seals and chemical resistant gaskets include the following specific types: A, B, F, GLT, GFLT, XLT, ULT, ETP, TBR. Specific material compound formulations can significantly alter the general performance properties. Hot hydrofluoric or chlorosulfonic acids and low molecular weight organic acids (formic and acetic acids). (0,175mm). Due to the variety of operating conditions and applications for these products or systems, the user, through his or her own analysis and testing, is solely responsible for making the final selection of the products and systems. Our integrated o-ring inventory network allows us to have real-time access to in-stock materials and provide fast, accurate quotes so you can be confident your order is en route. Viton Seal Temperature Range*:-17F (-27C) to 437o F (225C) Specialty formulations, Low Temperature: -67F (-55C) Connect with experts to learn more about Viton products and to find the right solution for your needs. Viton is a trademark of The Chemours Company FC, LLC. Chemical compatibility is extremely important during the material selection process to ensure your material will not react when introduced to specific chemicals. Since some rubber compounds are known to fail in extreme high-temperature environments, Viton is a great candidate for applications working under these circumstances. The temperature ranges presented above are approximations for dry air service only and should not be used to determine design specifications or end-use temperature limits. Compounds; Marco Compound Number Datasheet Hardness (Shore A) Color Low Temp High Temp Features; Compound: S1000: Datasheet: Hardness: 70: Color . Under dynamic conditions, the lowest service temperature is between 5F and 0F (-15C and -18C). Viton is a synthetic, high-performance fluoropolymer elastomer (rubber) commonly used in o-rings for rigorous applications. Wyatt Sealis proud to offer a variety ofParker O-Rings, Kalrezo-rings andcustom o-ringsto support every projects unique needs. FFKMs are the cleanest/purest compounds available on the market. Acetone, Skydrol, Ethyl Acetate
There should be a material fit for your application. (302 F). Responsive expert service. A major differentiator between the Viton product families is fluid resistance, which is based on the polymer's fluorine level. At high temperatures or in a fire, fluoroelastomers decompose and may release hydrogen fluoride. High Temperature Resistance O-ring Chemical Resistance Low Out Gassing Chlorine Wet/Dry . All of the designations stand for one single base material, which is fluoro rubber. Categorized under the ASTM D1418 and ISO 1629 designation of FKM (hence, why theyre also referred to as FKM o-rings), Viton O-Rings are preferred because of their high resistance to extreme heat and brutal atmospheric conditions, as well as to oxygen, mineral oil, fuels, hydraulic fluids, aromatics and many organic solvents and chemicals. On the other hand, Teflon is better in terms of non-adhesive properties but is less thermal resistant. Compare O-ring compatibility. It's impervious to mineral oil, ASTM oil No.1 and No.2, non-flammable hydraulic fluids, silicone oil and grease. The temperature range is determined by the base elastomer used. Viton standard compounds can withstand temperatures up to 446, while Buna o-rings can only handle up to 257. Fluorocarbon O-rings should be considered for use in aircraft, automobile and other mechanical devices requiring maximum resistance to elevated temperatures and tomany fluids. A great all-round O-ring material, Viton (FKM) delivers great resistance to a variety of oils, greases and fuels at high temperatures. With exceptional chemical resistance, Viton offers swell resistance in high octane and oxygenated fuel blends. Neoprene O-rings have a relatively low compression set, good resilience, abrasion, and are flex cracking resistant. Because Viton O-Rings have a high resistance to extreme heat (even flames), chemicals, oils, solvents, and weathering, theyre often used in the automotive, chemical processing, and aerospace industries in addition to many others. Viton also resists oxidation, ozone, and mold, as well as ultraviolet rays and adverse weather conditions. They are the first choice for clean applications and are particularly popular in the semiconductor industry. Selecting the appropriate fluoroelastomer ultimately will be determined on the desired: See the chart below for general performances differences. Some formulations are generally compatible with hydrocarbons, but incompatible with ketones such as acetone and methyl ethyl ketone, ester solvents such as ethyl acetate, amines, and organic acids such as acetic acid. Viton O-rings can also provide consistent sealing for up to two days in systems that reach up to 527F. Viton also is known for its excellent chemical resistance, making it a universal o-ring . Depending on the specific situation, you may also look at abrasion, tear, ozone, electrical resistance properties. FKM is an abbreviation of Fluorine Kautschuk Material. Viton has outstanding resistance to heat. Able to withstand heat up to 450 F, these O-rings maintain a strong seal even when the temperature rises. Base Resistance: % Loss of Elongation @ Break. Additionally, you can perform appropriate field tests to ensure the fluid, temperature, pressure, and environmental conditions are compatible with the O-ring of your choice. General purpose, low cost & high inventory FKM, AMS-R-83248 M83248/1-### PER MIL-R-83248 TY-1 CL-1, available in a UL recognized grade, compare to Parker V0747-75, Brown FKM Viton, improved oxidation resistance, compare to Parker V884-75, M83248/2-### PER MIL-R-83248C TY 1 CL 2, compare to Parker V0709-90, M83485/1-XXX PER MIL-R-83485 GLT-type FKM Improved low temp resistance, compare to Parker VM835-75, General purpose high durometer, good in high pressure and dynamic applications, compare to Parker VA153-90, General purpose softer FKM, compare to Parker V0986-50, General purpose softer FKM, compare to Parker V0769-60 and Parco 9009-60, White FKM, improved oxidation resistance, compare to Parker V1033-70, Internally lubricated with PTFE, reduces surface friction and sticking, similar to Parker V0848-75, Viton ETP, base resistant , best chemically resistant FKM, compare to Parker V1260-75, Viton GFLT recommended for Oxygenated Automotive Fuels (containing MeOH, EtOH, MTBE, etc.
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