Kalrez
®
From aerospace and chemical processing to chip manufacturing and oil and gas applications, Dupont™ KALREZ® elastomers are designed to provide greater stability, strength and more effective sealing.
Innovation and development: DuPont™ Kalrez® sealants
DuPont™ Kalrez® sealants were developed to withstand harsh operating environments and last longer than other sealants. These sealants are inert, resistant to over 1,800 chemicals and stable at high temperatures. The production of Kalrez® perfluoroelastomer parts follows the highest quality standards, guaranteeing documented traceability for each individual part. Due to their precision and durability, Kalrez® parts allow for longer process and equipment uptime, increasing productivity and overall yield.
USE
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Seals and O-rings in pumps, reactors and flange joints
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Valve stem packing systems
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High-performance parts for aerospace, oil and gas, transportation and chemical process equipment
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Applications in the field of life sciences
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Semiconductor processing
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Photovoltaic manufacturing seals
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Materials in contact with food
ADVANTAGES
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Resists over 1,800 different chemicals
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High temperature stability up to 327°C
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Maintains the integrity of the seal
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Reduces maintenance and operating costs
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Long lasting seal
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Meets safety standards for the pharmaceutical and food industries
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Available in standard and specialty compounds formulated for custom use.
Chemical Process
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KALREZ® 4079
Kalrez® 4079 is a low compression product for use in various components, such as O-rings, diaphragms and gaskets, in the chemical and aerospace industries. It is filled with carbon black and has excellent chemical, mechanical and hot air aging properties. It resists organic, inorganic acids and aldehydes well, but is not suitable for use with hot water/steam or some hot aliphatic amines, ethylene oxide or propylene oxide. The maximum recommended service temperature is 316°C, with short excursions to higher temperatures possible.
KALREZ® 6190
A carbon black filled product specifically designed for custom parts and high volume applications. Excellent thermal stability, good mechanical strength properties and can be used in static and dynamic sealing applications up to 300°C (572°F). Additionally, KALREZ® 6190 is resistant to most chemical solvents, but is not recommended for use in steam, strong acids or bases.
KALREZ® 7390 SPECTRUM™
KALREZ® SPECTRUM™ 7390 perfluoroelastomer seals are designed to meet the most severe applications in contact with chemicals, hot water and steam - based on a cross-linking system of which Dupont™ is proprietary, KALREZ® 7390 parts can meet the FFKM 90 SH specifications. Produced in different shapes for applications where superior mechanical resistance is required.
Semiconductor
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KALREZ® 6375 UP
Converting raw semiconductor materials into a useful device requires hundreds of chemical processing steps. A significant number of these steps involve the use of aggressive acids, solvents, and bases, such as amines, to clean, wash, etch, or remove unwanted substances and contaminants from the wafer surface. However, these chemicals can attack elastic seals, causing swelling and degradation or leaching of unwanted metals and ions that affect the functionality of the integrated circuit.
KALREZ® 8002
DuPont™ Kalrez® 8002 is a clear product ideal for ash/stripe applications. This unfilled product offers exceptional resistance to plasma cracking, as well as extremely low particle generation in oxygen- and fluorine-based plasmas compared to mineral-filled products. Additionally, Kalrez® 8002 demonstrates excellent resistance to dry process chemistry, good mechanical strength and is suitable for static, low stress/low sealing force applications and “select” bonded door seals.
KALREZ® 8775
KALREZ® 8775 is a black product for semiconductor applications that offers excellent amine resistance, resistance to aggressive aqueous media, superior overall chemical resistance, excellent compressive strength and a superior service temperature of 300°C. KALREZ® 8775 can be a suitable replacement for KALREZ® 1050 UP in wet chemistry applications.
KALREZ® 9300
DuPont™ Kalrez® 9300 perfluoroelastomer parts are a brown product suitable for dielectric (oxide) etching applications. This product has been specifically designed for use in plasma environments that combine "physical" ions and "chemical" radicals. In other words, it is ideal where a balance between "physical" and "chemical" plasma erosion resistance is required.
KALREZ®
W240 UP
DuPont™ Kalrez® W240UP perfluoroelastomer components are designed for semiconductor wet processes, such as wafer cleaning tools, wet etch tools, coating development tools, and filters/pumps/valves . Kalrez® W240UP can help increase process reliability and meet market needs in the most demanding wet applications.
Life Sciences
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KALREZ® 6221
DUPONT™ KALREZ® 6221 perfluoroelastomer parts are a white product that provides superior chemical resistance and low contamination in pharmaceutical and food handling applications where FDA compliance is required. DUPONT™ KALREZ® 6221 parts are suitable for WATER FOR INJECTION (WFI) systems, STEAM-IN-PLACE (SIP) cleaning and other critical systems. Thermally stable up to 260°C (500°F), allowing them to be used in phase II sterilization processes, where other elastomers lose their sealing ability.
KALREZ® 6230
DUPONT™ KALREZ® 6230/6230A* perfluoroelastomer parts are a black product that provides superior chemical resistance and low contamination in pharmaceutical and food handling applications where FDA compliance is required. DUPONT™ KALREZ® 6230/6230A parts are suitable for WATER FOR INJECTION (WFI), STEAM-IN-PLACE (SIP) cleaning and other critical systems. Thermally stable up to 260°C (500°F) which allows them to be used in phase II sterilization processes, where other elastomers lose their sealing ability.
Energy
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KALREZ® 7390 SPECTRUM™
KALREZ® SPECTRUM™ 7390 perfluoroelastomer seals are designed to meet the most severe applications in contact with chemicals, hot water and steam - based on a cross-linking system of which Dupont™ is proprietary, KALREZ® 7390 parts can meet the FFKM 90 SH specifications. Produced in different shapes for applications where superior mechanical resistance is required.
Photovoltaic
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KALREZ® PV8070
DuPont™ Kalrez® PV8070 perfluoroelastomer components are a black product for photovoltaic cell manufacturing processes requiring high temperature resistance, including doping for n-type layer formation (bulk c-Si), diffusion for thermal diselenide plant (CGIS) and TCS-based thermal CVD for polysilicon feedstock production. for the production of polysilicon feedstock.
KALREZ® W240
DuPont™ Kalrez® W240 perfluoroelastomer components are a black product for photovoltaic wet manufacturing processes that require a wide range of chemical resistance. photovoltaic systems requiring a wide range of chemical resistance. W240 offers an excellent combination of properties (acid/base resistance) and is the preferred product for wet processes as an upgrade over standard elastomers. standard elastomers, such as FKM, NBR, EPDM, etc. We suggest a maximum serving temperature of 230°C. suggested.