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In industrial sealing and gasketing applications, the shift from traditional asbestos-based materials to safer, high-performance alternatives is complete. A Non-asbestos Sheet, often referred to as compressed non-asbestos fiber (CNAF) sheet, is the modern, reliable, and regulatory-compliant solution. Kaxite Seals is at the forefront of this innovation, engineering premium Non-asbestos Sheets designed to meet the rigorous demands of today's industries without the health and environmental hazards associated with asbestos.
Kaxite Seals' Non-asbestos Sheets are composite materials manufactured from high-strength organic and inorganic fibers, such as aramid, glass, and cellulose, bonded with advanced nitrile rubber (NBR) or other elastomers. This formulation results in a versatile gasketing material that offers excellent sealing performance, superior temperature and pressure resistance, and exceptional durability against a wide range of fluids, including oils, fuels, steam, and chemicals.
Understanding the precise parameters of a gasketing material is crucial for selecting the right product for your application. Below are the detailed specifications for Kaxite Seals' standard Non-asbestos Sheet grade, KX-7100.
| Property | Test Method | Typical Value (KX-7100) | Units |
|---|---|---|---|
| Tensile Strength (MD) | ASTM F152 | 16.5 | MPa |
| Tensile Strength (CMD) | ASTM F152 | 12.0 | MPa |
| Compressibility | ASTM F36 | 10 ± 5 | % |
| Recovery | ASTM F36 | 50 | % |
| Creep Relaxation | ASTM F38 | 35 | % |
| Stress Relaxation | ASTM F38 | 25 | % |
| Fluid Resistance (ASTM Oil #3, 100°C/24hr) | ASTM F146 | +15 / +8 | % (Thickness/Weight) |
| Flange Pressure (Sealing Limit) | Internal Test | 20 | MPa |
| Grade Code | Binder Type | Key Feature | Standard Thickness | Sheet Size |
|---|---|---|---|---|
| KX-7100 (Standard) | NBR | General Purpose, Oil & Fuel Resistant | 0.4mm to 3.0mm | 1500mm x 1500mm, Rolls |
| KX-7200 (Steam Grade) | SBR | Excellent for Saturated Steam & Hot Water | 0.8mm to 3.0mm | 1500mm x 1500mm |
| KX-7300 (Chemical Grade) | FKM (Viton®) | Superior Chemical & Acid Resistance | 0.5mm to 2.5mm | 1500mm x 1500mm |
| KX-7400 (High Tensile) | NBR | Enhanced Strength for High-Pressure Flanges | 1.5mm to 4.0mm | 1500mm x 1500mm |
Our Non-asbestos Sheets are engineered for versatility and reliability across numerous sectors. Key application areas include:
Q: What exactly does "Non-asbestos" mean? Is it completely free of any asbestos fibers?
A: Yes. The term "Non-asbestos" is a strict industry classification indicating that the material contains zero asbestos fibers. Kaxite Seals' products are manufactured using carefully selected synthetic and organic fibers like aramid (e.g., Kevlar®), glass, and cellulose. Our materials are certified and can be supplied with full material composition declarations to assure compliance with global health and safety regulations such as OSHA, REACH, and others.
Q: How does the performance of a Non-asbestos Sheet compare to traditional asbestos sheets?
A: Modern Non-asbestos Sheets from Kaxite Seals are designed to meet or exceed the performance of traditional asbestos-based materials in almost every aspect. While asbestos had inherent heat resistance, our advanced fiber and binder formulations provide excellent temperature tolerance, often with better compressibility and recovery. They offer superior sealing force retention (lower creep relaxation), better consistency in quality, and are non-carcinogenic, making them safer to handle, cut, and install.
Q: Can I use the same gasket design and bolt torque with a Non-asbestos Sheet as I did with asbestos?
A: In most general applications, you can use the same design and flange assembly procedures. However, for optimal performance and longevity, it is recommended to follow the specific technical data for the Kaxite Seals grade you select. Non-asbestos materials may have different compressibility characteristics. Using the correct surface finish (typically 125-250 µin Ra), proper bolt load calculation, and a controlled tightening sequence is always best practice. Our technical team can provide specific guidance for critical applications.
Q: Are all Non-asbestos Sheets the same? How do I choose the right grade?
A: No, they are not the same. Performance varies significantly based on the fiber blend, binder type, and manufacturing process. Kaxite Seals offers a range of grades for different services. Select KX-7100 (NBR) for general oil and fuel applications. Choose KX-7200 for steam and hot water systems. For aggressive acids, solvents, or chemicals, KX-7300 with FKM binder is required. For high-pressure flange connections, the KX-7400 High Tensile grade is ideal. Always match the grade to the media, temperature, and pressure of your application.
Q: How should I store and handle Kaxite Seals Non-asbestos Sheets?
A: Store sheets in a cool, dry place away from direct sunlight, heat sources, and ozone generators. Keep them flat or rolled (not folded) to prevent permanent creasing. Sheets should be stored in their original packaging until use. When cutting gaskets, ensure tools are sharp to achieve clean cuts without tearing the material. Standard workshop hygiene practices are sufficient, as no special respiratory protection is needed unlike with asbestos materials.
Q: Do Kaxite Seals Non-asbestos Sheets come with certifications?
A: Yes. Kaxite Seals is committed to quality and safety. Our standard Non-asbestos Sheets comply with major international standards such as ASTM F104, DIN 3754, and JIS 3453. We can provide certificates of conformity, material test reports (MTRs), and non-asbestos declarations. Specific grades are also tested and certified for use in industries like marine (type approval possible) and potable water (WRAS, NSF/ANSI 61 where applicable).
Q: Can these sheets be used for high-temperature applications above 230°C (446°F)?
A: Our standard KX-7100 grade is rated for continuous service up to 230°C. For applications involving higher temperatures, we recommend consulting our technical team. We offer specialized grades with different binders and fiber blends that can withstand intermittent or continuous exposure at higher temperatures. It is critical to consider both the peak and continuous operating temperature along with the media when selecting a material for extreme heat.
