Kalrez
From aerospace and chemical processing to chip manufacturing and oil and gas applications, DuPont™ Kalrez® elastomers are engineered to provide more stability, more resistance, and more effective sealing. Period. While DuPont didn't invent o-rings or specialty sealants, it has a 40-year track record of innovation and development, creating sealants that stand up to the most challenging operating environments.
Aside from its cleanliness and purity, Kalrez® polymer chains are engineered to be one of the most inert polymer structures available, standing up to more than 1,800 different chemicals while offering high-temperature stability.
Kalrez® perfluoroelastomer (FFKM) parts are manufactured to the highest quality standards. Every part has documented traceability, and these parts provide one of the longest, most predictable lifespans in industry. The long-term, proven performance of Kalrez® parts can mean less frequent seal changes, repairs, and inspections, increasing process and equipment uptime for greater productivity and yield.
DuPont Kalrez® and Vespel® Center of Excellence
When sealing matters, choose DuPont Kalrez® and Vespel® products. DuPont™ Kalrez® and Vespel® work with customers to bring state of the art technology to solve customers’ toughest application challenges.
Kalrez® Sealing Technologies
From aerospace and chemical processing to chip manufacturing and oil and gas applications, DuPont™ Kalrez® elastomers are engineered to provide more stability, more resistance, and more effective sealing. Period.
DuPont Kalrez® and Vespel®
Perfluoroelastomer parts have been the sealing material of choice for long-term reliable sealing in the harshest chemical environments. Today, elastomeric seals are expected to perform in a variety of even more aggressive chemicals and at higher temperatures.
Kalrez® 0090 parts for Rapid Gas Decompression
DuPont scientists developed Kalrez® 0090 perfluoroelastomer parts for outstanding resistance to repeated rapid gas decompression.
DuPont
Kalrez® 4079
Polymer Name: Perfluoroelastomer (FFKM)
Physical Form: Seals, Custom, Diaphragms, O-rings
Features: Good Mechanical Properties, High Temperature Resistance, Heat Aging Resistant, Low Compression Set, Good Thermal Stability, Chemical Resistant, General Purpose
End Uses: Semiconductor Applications, Pump Parts, Aircraft Applications
Color: Black
Kalrez® 4079 perfluoroelastomer parts are a low compression set product for general purpose use in O-rings, diaphragms, seals and other parts used in the chemical process and aircraft industries. It is a carbon black filled product with excellent chemical resistance, good mechanical properties, and outstanding hot air aging properties. It exhibits low swell in organic acids, inorganic acids and aldehydes, and has good response to temperature cycling effects. A maximum service temperature of 316°C (600°F) is suggested, with short excursions to higher temperatures possible. Kalrez® 4079 is not recommended for use in hot water/steam applications or in contact with certain hot aliphatic amines, ethylene oxide, or propylene oxide.
DuPont
Kalrez® Spectrum™ 6375
Polymer Name: Perfluoroelastomer (FFKM)
Physical Form: Seals, Custom, Diaphragms, O-rings, Valve Seats
Features: High Temperature Resistance, Good Thermal Stability, Chemical Resistant
End Uses: Valve Parts, Electrical Connectors, Logging While Drilling Tools, Semiconductor Applications, Ball Valves, Measurement While Drilling Tools, Valves, Electric Submersible Pump
Color: Black
Kalrez® Spectrum™ 6375 is designed to give outstanding performance in the widest possible range of chemicals and temperatures. Mixed streams, once a problem for many chemical processors, can now be handled by 6375, furthermore, the curing system also allows for a maximum service temperature of 275°C (525 °F) which translates to increased chemical resistance over all temperature ranges, especially if high temperature process excursions occur. This combination of chemical and thermal resistance provides advantages for chemical processors. Kalrez® Spectrum™ 6375 is a carbon black-filled product for general use in O-rings, seals, diaphragms and other parts specifically for the chemical process industry. This product has excellent broad chemical resistance, good mechanical properties, and outstanding hot-air aging properties. Kalrez® Spectrum™ 6375 is well suited for use in mixed process streams because of its excellent resistance to acids, bases, and amines. It is also recommended for use in hot water, steam, pure ethylene oxide and propylene oxide.
DuPont
Kalrez® Spectrum™ 7075
Polymer Name: Perfluoroelastomer (FFKM)
Physical Form: Seals, Custom, Diaphragms, O-rings, Valve Seats
Features: Good Seal Force Retention, High Temperature Resistance, Low Compression Set, Good Thermal Stability, Chemical Resistant
End Uses: Flanges, Semiconductor Applications, Pump Parts, Hot Glue Delivery Nozzle, Valves, Valve Parts
Color: Black
Kalrez® perfluoroelastomer parts are the material of choice for mechanical seals, valves, flanges and other demanding chemical and hydrocarbon processing applications. Kalrez® Spectrum™ 7075 has enhanced physical properties including very low compression set and improved seal force retention. It is a carbon black-filled product utilizing proprietary cure chemistry. Its mechanical properties are designed for improved sealing performance in both high temperature environments and temperature cycling situations. Kalrez® Spectrum™ 7075 O-rings have a glossy finish. This product was developed specifically for the chemical and hydrocarbon industries to provide improved chemical and thermal resistance better than the industry standard set by Kalrez® 4079.
DuPont
Kalrez® 9100
Polymer Name: Perfluoroelastomer (FFKM)
Physical Form: Seals
Features: Excellent Resistance To Plasma Radicals, Low Compression Set, Good Thermal Stability, Good Elastic Recovery, Low Outgassing, Low Metal Content, Good Mechanical Properties
End Uses: Semiconductor Applications, Pump Parts
Color: Amber
Kalrez® 9100 is an amber translucent product targeted specifically for PECVD, ALD, HDPCVD and Conductor (Poly/Metal) Etch applications*. Kalrez® 9100 has been specifically designed for low erosion and ultra-low particle generation in harsh plasma environments. It offers excellent thermal stability, very low outgassing as well as excellent elastic recovery and good mechanical strength properties and is well suited for both static and select dynamic sealing applications*. A maximum application temperature of 300°C (572°F) is suggested. Ultrapure post-cleaning and packaging is standard for allKalrez® 9100 parts.
DuPont
Kalrez® 6230
Polymer Name: Perfluoroelastomer (FFKM)
Physical Form: Seals, O-rings
Features: Low Contamination From Extractables, Chemical Resistant, Good Steam Cycling Resistance
End Uses: Semiconductor Applications, O Rings
Color: Black
Kalrez® 6230/6230A* perfluoroelastomer parts are a black product that provide superior chemical resistance and low contamination from extractables in pharmaceutical and food handling applications where FDA compliance is required. Kalrez® 6230/6230A parts are especially suited for Water for Injection (WFI) systems, Steam-in-Place (SIP) cleaning and other critical systems. Kalrez° 6230/6230A parts are thermally stable up to 260°C (500°F), permitting them to be used in Stage II Sterilization processes, where other elastomers lose their sealing ability.
DuPont
Kalrez® Spectrum™ 7375
Polymer Name: Perfluoroelastomer (FFKM)
Physical Form: Seals
Features: Good Compressive Strength, Good Mechanical Properties, Good Retention of Properties
End Uses: Semiconductor Applications, Pump Parts
Color: Black
Kalrez® Spectrum™ 7375 perfluoroelastomer parts are an innovative FFKM product based on a patented crosslinking system for chemical process industry applications where broad chemical and water/steam resistance are needed at elevated temperatures. Kalrez® Spectrum™ 7375 parts exhibit excellent compression set resistance, outstanding physical property retention, and good mechanical strength properties. A maximum application temperature of 300°C is suggested.
DuPont
Kalrez® 6221
Polymer Name: Perfluoroelastomer (FFKM)
Physical Form: Seals, O-rings
Features: Low Contamination From Extractables, Chemical Resistant, Good Steam Cycling Resistance
End Uses: Semiconductor Applications, O Rings
Color: White
Kalrez® 6221 perfluoroelastomer parts are a white product that provide superior chemical resistance and low contamination from extractables in pharmaceutical and food handling applications where FDA compliance is required. Kalrez® 6221 parts are especially suited for Water for Injection (WFI) systems, Steam-in-Place (SIP) cleaning and other critical systems. Kalrez® 6221 parts are thermally stable up to 260°C (500°F), permitting them to be used in Stage II Sterilization processes, where other elastomers lose their sealing ability. Kalrez® 6221 is available as O-rings. For white custom parts, please refer to Kalrez® LS205 parts.
DuPont
Kalrez® Spectrum™ 6380
Polymer Name: Perfluoroelastomer (FFKM)
Physical Form: Seals, O-rings
Features: Chemical Resistant, Good Mechanical Properties
End Uses: Semiconductor Applications, O Rings
Color: Cream
Kalrez® Spectrum™ 6380 perfluoroelastomers parts are a non-black product developed specifically for chemical processes involving hot, aggressive amines. In addition, it has excellent overall chemical resistance (see chart below). This cream colored product is easily identifiable when selecting an O-ring material for harsh chemical plant services. This material has excellent mechanical properties and is a top choice for both static and dynamic sealing applications. A maximum service temperature of 225°C is suggested while short-term excursions to higher temperatures are permissible.
DuPont
Kalrez® 0090
Polymer Name: Perfluoroelastomer (FFKM)
Physical Form: Seals, O-rings, Valve Seats
Features: High Modulus, Durable, Good Thermal Stability, High Hardness, Chemical Resistant
End Uses: Semiconductor Applications, Pump Parts, Valves, O Rings, Valve Parts
Color: Black
Kalrez® 0090 perfluoroelastomer parts deliver durable, reliable sealing solutions for applications requiring excellent rapid gas decompression (RGD) properties as well as high hardness, high modulus properties, and excellent extrusion resistance (even without backup rings). Potential oil and gas applications include downhole equipment such as drilling and completion tools, as well as industrial equipment including pumps, valves and compressors. Kalrez® 0090 has been certified by two independent laboratories to meet rigorous requirements for resistance to RGD. In addition to demonstrated RGD resistance, Kalrez® 0090 seals provide superior performance in regard to chemical and temperature properties. Chemical resistance: Kalrez® 0090 is resistant to chemicals encountered in the oil and gas industry, including sour process streams containing H2S. Broad temperature capability: Kalrez® 0090 retains good physical properties up to temperatures as high as 250°C (482°F) and down to 21°C (5.8°F). Under pressurized conditions, in laboratory tests, Kalrez® 0090 has demonstrated low temperature performance down to 40°C (40°F).
Brand Summary
Identification
Applications & Uses
Brand Highlights
Kalrez® elastomers for specialty sealing are engineered to resist more than 1,800 chemicals while offering high temperature stability. Advantages of Kalrez® include:
- Resists over 1,800 different chemicals
- High temperature stability up to 327°C
- Maintains seal integrity
- Reduces maintenance and operating costs
- Long seal life
- Meets safety standards for pharmaceutical and food processing
- Available in standard and specialty compounds formulated for custom use
- Seals and o-rings in pumps, reactors and flange joints
- Valve stem packing systems
- High-performance parts for aerospace, oil and gas equipment, transportation, and chemical processing
- Life science applications
- Semiconductor processing
- Photovoltaic manufacturing seals
- Food contact materials
Kalrez® perfluoroelastomer (FFKM) parts withstand attack from over 1,800 chemicals, solvents and plasmas. While exhibiting excellent chemical compatibility, the Kalrez® product line delivers outstanding performance in aggressive process environments. Whether it’s resistance to acids, amines, plasma, ultrapure de-ionized water or strong bases, by selecting the Kalrez® product that is best suited to a specific application, manufacturers can improve seal performance in their operating environment. Kalrez® parts are available in a number of different compounds that are formulated to optimize properties and give the best possible performance in various chemicals and temperatures.
Fluoroelastomer O-ring (left) and Kalrez® O-ring (right). The Kalrez® O-ring exhibits less volume swell in trisolvent test
Chemical Resistance Chart
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Extending Lifetime of Critical Seals in HDPCVD Processes
As the semiconductor industry continues to invest in 300 mm wafer fabrication, the spotlight is on process improvement and the greater demands this technology makes on process equipment. In HDPCVD processes elastomer sealing materials can be a weak link because of the need for seal replacement during preventive maintenance (PM) procedures.
Kalrez® Parts in Natural Gas Sampling Systems and Delivery
Transporting natural gas from well to consumer is a delivery challenge faced by industrialized nations throughout the world. In the United States alone, well over 270,000 miles of above- and below-ground pipelines are dedicated to delivering gas to the millions of households and commercial businesses that rely on natural gas for heat and energy.
Kalrez® Spectrum™ 7275 Double Seal Life in Chlorine Dioxide Service
Chlorine dioxide is a strong oxidizing gas that finds many uses as bleaching agent and disinfectant, being a more effective and safer biocide than other sources of chlorine. Most of the production of chlorine dioxide is used at paper mills for pulp bleaching.