An Non-asbestos sheet is a high-performance sealing material engineered to replace traditional asbestos-based gaskets. Asbestos, once widely used for its heat resistance and durability, is now recognized as a severe health hazard, causing diseases like asbestosis and mesothelioma. Modern non-asbestos sheets provide equivalent or superior sealing properties without the associated health risks. They are composite materials made from high-strength fibers such as aramid (e.g., Kevlar), glass, carbon, or mineral fibers, bonded with synthetic elastomers like NBR (Nitrile Butadiene Rubber) or SBR (Styrene Butadiene Rubber). These sheets are essential components in creating reliable gaskets for countless industrial applications, ensuring leak-proof seals under pressure, temperature, and chemical stress.
At Kaxite Sealing, we have dedicated decades to perfecting advanced sealing solutions. Our non-asbestos sheets are the culmination of rigorous research, premium materials, and precision manufacturing. We understand that downtime caused by seal failure is costly and dangerous. Therefore, our products are designed for maximum reliability, longevity, and safety across the most demanding environments. Choosing Kaxite Sealing means investing in a seal you can trust, backed by unparalleled technical expertise and a commitment to environmental and workplace safety standards worldwide.
Our non-asbestos sheet range is categorized into several grades, each optimized for specific service conditions. Below are the detailed technical specifications.
| Parameter | KX-NA100 (Standard) | KX-NA200 (High-Temp) | KX-NA300 (Chemical) |
|---|---|---|---|
| Primary Fibers | Aramid, Cellulose | Aramid, Mineral | Aramid, Glass |
| Binder Polymer | NBR | SBR | FKM |
| Standard Color | Pink | Blue | Yellow |
| Min. Temperature | -50°C (-58°F) | -50°C (-58°F) | -30°C (-22°F) |
| Max. Temperature | +200°C (+392°F) | +300°C (+572°F) | +250°C (+482°F) |
| Density (g/cm³) | 1.6 - 1.8 | 1.7 - 1.9 | 1.8 - 2.0 |
| Tensile Strength (Min) | 12 MPa | 14 MPa | 16 MPa |
| Compression Set (Max) | 25% | 20% | 18% |
| Best For Media | Water, Air, Steam, Oils, Fuels | Hot Oils, Exhaust, Saturated Steam | Acids, Alkalis, Solvents, Aggressive Chemicals |
Kaxite Sealing non-asbestos sheets are versatile and used across a multitude of industries. Common applications include:
Q: What exactly does "non-asbestos" mean? Is it completely safe?
A: "Non-asbestos" means the material is formulated without any asbestos fibers. Asbestos is a known carcinogen, and its use is heavily restricted or banned globally. Kaxite Sealing sheets use modern synthetic and mineral fibers that pose no known health risks associated with inhalation of airborne fibers during handling or machining. They are manufactured to be completely safe when used as directed, complying with all international safety standards like OSHA 1910.1001 and EU REACH regulations.
Q: How do I select the right grade of non-asbestos sheet for my application?
A: Selection depends on three primary factors: the media (chemical compatibility), the operating temperature, and the pressure. First, identify the fluid or gas being sealed. Second, determine the continuous and peak temperatures of the process. Third, consider the flange pressure and bolt load. Cross-reference this information with our grade specifications table. For complex or critical applications, we strongly recommend consulting with Kaxite Sealing's technical support team for a precise recommendation.
Q: Can I use a non-asbestos sheet as a direct replacement for an old asbestos gasket?
A: In the vast majority of cases, yes. Non-asbestos sheets are designed as direct "drop-in" replacements for compressed asbestos fiber (CAF) gaskets. They often provide better sealing performance and longer service life. However, it is crucial to ensure the flange surface is clean, undamaged, and that the correct torque sequence and values are applied, as non-asbestos materials may have different compression characteristics.
Q: What is the shelf life of Kaxite Sealing non-asbestos sheets?
A: When stored correctly in a cool, dry place away from direct sunlight, ozone sources (like electric motors), and extreme temperatures, our non-asbestos sheets have a shelf life of up to 5 years from the date of manufacture. The material should be kept in its original packaging until use to prevent contamination and moisture absorption.
Q: How do I cut and fabricate a gasket from your sheet material?
A: Our sheets are designed for easy fabrication. For simple shapes, you can use a sharp utility knife or scissors. For bolt holes and complex profiles, a sharp gasket punch or die cutter is recommended. For high-volume or precision shapes, die-cutting or CNC cutting is ideal. Always cut on a clean, hard surface and ensure the gasket is cut to the correct dimensions—it should fit snugly inside the bolt circle without impinging on the bore.
Q: Are Kaxite Sealing non-asbestos sheets approved by any industry standards?
A: Absolutely. Our manufacturing process and products are certified to meet numerous international standards. Key approvals and compliances include ISO 9001:2015 for quality management, and our materials are tested to meet performance specifications like ASTM F104, DIN 3754, and JIS B 2403. Specific grades are also developed to meet FDA requirements for incidental food contact where applicable.
Q: What flange surface finish is recommended for optimal performance?
A: A proper flange surface is critical for a successful seal. We recommend a serrated (phonographic) finish with a roughness average (Ra) between 3.2 and 6.3 micrometers (125-250 microinches). Flanges should be flat, clean, free of old gasket material, rust, and pits. Overly smooth or mirror-finish surfaces can hinder the gasket's ability to grip and seal effectively.
Q: Can these sheets be used for high-pressure steam applications?
A: Yes, specifically our high-temperature grade (KX-NA200) is excellently suited for saturated steam service. It is designed to withstand the temperatures and pressures typical in steam lines, boiler manways, and heat exchangers. Always verify that the maximum temperature and pressure of your specific steam system fall within the published limits of the material grade.
