SEALMTL 775H FFKM O-Ring
High-Temperature Special Model | Benchmarking DuPont KALREZ® 6375/7075 | 300℃ Long-Term Sealing
Core Features
SEALMTL 775H is a high-temperature special perfluoroelastomer (FFKM) O-ring, adopting a high-end imported raw rubber formula, which can partially replace DuPont KALREZ® 6375 and 7075, and meets the ASTM D2000 perfluoroelastomer standard. The product's maximum continuous service temperature reaches 300℃, and it can withstand short-term high temperature of 316℃. It has extremely low weight loss and particle generation in plasma environments such as dry etching and deposition. It is especially resistant to high-temperature superheated water, steam and acid solvents, with a low-temperature brittleness of -15℃. It is an ideal choice for high-temperature working condition sealing. It also meets FDA certification requirements and has a wide range of applications. |
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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 | — | 77 | ASTM D2240 |
100% Modulus | MPa | 10.3 | ASTM D412 (500mm/min) |
Tensile Strength | MPa | 16.5 | ASTM D412 (500mm/min) |
Elongation at Break | % | 155 | ASTM D412 (500mm/min) |
Compression Set (25% Compression) | % | 19 (70h×200℃) | ASTM D395 Method B |
Low Temperature Brittleness Temperature | ℃ | -15 | ASTM D746-2007 |
Maximum Continuous Service Temperature | ℃ | 300 | Actual Working Condition Test |
Temperature and Chemical Resistance Performance
Temperature Range: -15℃~300℃, still maintains good sealing performance under long-term high-temperature working conditions of 300℃, and has excellent stability in plasma environments.
Chemical Resistance Level(++++=Excellent +++=Very Good ++=Good +=Poor):
• Excellent Resistance: Alcohols, ethers, esters, ketones, superheated water/steam, aromatic/aliphatic oils, normal-temperature amine media
• Very Good Resistance: Acids, alkalis, aldehydes, hot air
• Good Resistance: Strong oxidants
• Not Resistant: High-temperature organic amine media above 70℃, ethylene oxide/propylene oxide
Applicable Industries and Application Scenarios
Core Applicable Industries
Petrochemical, Semiconductor Manufacturing, New Energy, Aerospace, High-Temperature Equipment Manufacturing
Typical Application Scenarios
1. Mechanical seals for high-temperature pumps and reactors, suitable for conveying and reaction equipment of high-temperature superheated water, steam and acid solvents; 2. Seals for semiconductor plasma etching and deposition equipment, such as cavity doors and quartz chamber seals, reducing particle contamination; 3. High-temperature seals for new energy equipment, such as sealing parts of lithium battery sintering furnaces and photovoltaic silicon wafer processing equipment; 4. High-temperature seals for aerospace ground equipment, suitable for sealing systems of high-temperature hot air and high-temperature oil media; 5. High-temperature seals for mixers and grinders, suitable for high-temperature grinding and mixing processes below 300℃. Applicable Equipment: High-temperature seals for mixers and grinders, suitable for high-temperature grinding and mixing processes below 300℃. |
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Product Processing and Certification
Can be processed into O-rings, diaphragms, washers, rubber strips, rubber plates, and custom products. Special parts for plasma environments are produced in a Class 1000 cleanroom; the product has passed FDA certification, meets the high-temperature sealing needs of the food and pharmaceutical industry, and can provide plasma environment performance test reports.
For more product details, sample requests, or custom sizes, please contact us directly for an exclusive solution: York@sealmtl.com |