SEALMTL 479H FFKM O-Ring
Ultra-High Temperature Special Model | Benchmarking DuPont KALREZ® 4079 | 320℃ Ultra-High Temperature Adaptation
Core Features
SEALMTL 479H is an ultra-high temperature special perfluoroelastomer (FFKM) O-ring, benchmarking DuPont KALREZ® 4079, and meets the ASTM D2000 perfluoroelastomer standard. The product's maximum continuous service temperature reaches 320℃, with a temperature range of -5~320℃. It is specially designed for high-temperature hot air environments, has excellent aging resistance and elasticity retention rate under ultra-high temperature working conditions, is made of high-end imported raw rubber, and has stable performance. It is an exclusive sealing material for ultra-high temperature industrial equipment, suitable for special working conditions with extreme temperature resistance requirements. |
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Key Performance Parameters
All product performances comply with ASTM standards, with high consistency in mass production, and third-party test reports are available
Test Item | Unit | Technical Index | Test Standard |
Shore A Hardness | — | 78 | ASTM D2240 |
100% Modulus | MPa | 11.2 | ASTM D412 (500mm/min) |
Tensile Strength | MPa | 17.3 | ASTM D412 (500mm/min) |
Elongation at Break | % | 148 | ASTM D412 (500mm/min) |
Compression Set (25% Compression) | % | 22 (70h×200℃) | ASTM D395 Method B |
Low Temperature Brittleness Temperature | ℃ | -5 | ASTM D746-2007 |
Maximum Continuous Service Temperature | ℃ | 320 | Actual Working Condition Test |
Temperature and Chemical Resistance Performance
Temperature Range: -5℃~320℃, specially designed for high-temperature hot air environments, with excellent aging resistance and high elasticity retention rate under long-term ultra-high temperature working conditions of 320℃, and can withstand short-term temperature fluctuations of 330℃.
Chemical Resistance Level(++++=Excellent +++=Very Good ++=Good +=Poor):
• Excellent Resistance: Hot air, superheated water/steam, aromatic/aliphatic oils, high-temperature acidic solvents
• Very Good Resistance: Alcohols, ethers, esters, ketones, normal-temperature acids, normal-temperature alkalis
• Good Resistance: Strong oxidants, normal-temperature amine media
• Not Resistant: High-temperature organic amine media above 70℃, ethylene oxide/propylene oxide, high-temperature strong alkaline media
Applicable Industries and Application Scenarios
Core Applicable Industries
High-Temperature Equipment Manufacturing, Aerospace, Petrochemical (Ultra-High Temperature Section), New Energy (High-Temperature Sintering), Metallurgical High-Temperature Equipment
Typical Application Scenarios
1. Seals for ultra-high temperature reactors and high-temperature furnaces, suitable for working condition systems of hot air and high-temperature steam below 320℃; 2. High-temperature seals for aerospace ground test equipment, such as seals for high-temperature simulation test chambers and engine test equipment; 3. High-temperature seals for new energy high-temperature sintering equipment, such as seals for lithium battery cathode material sintering furnaces and photovoltaic silicon wafer high-temperature annealing furnaces; 4. Pump and valve seals for ultra-high temperature sections in petrochemical industry, suitable for conveying equipment of high-temperature oil and high-temperature acidic media; 5. Seals for metallurgical high-temperature equipment, such as flange seals and furnace door seals for high-temperature melting furnaces and roasting furnaces. Applicable Equipment: Ultra-high temperature reactors, high-temperature simulation test chambers, lithium battery sintering furnaces, high-temperature melting furnaces, petrochemical ultra-high temperature pumps, etc. |
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Product Processing and Certification
Can be processed into O-rings, diaphragms, washers, rubber strips and custom ultra-high temperature seals with high dimensional accuracy; the product adopts a special formula for high temperature, no harmful substances precipitate, suitable for ultra-high temperature clean working conditions, and can provide performance test reports for ultra-high temperature working conditions.
For more product details, sample requests or custom sizes, please contact us directly for an exclusive solution: york@sealmtl.com |