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For decades, industrial sealing relied heavily on asbestos-based materials. While effective, the severe health risks associated with asbestos fibers led to a global shift towards safer, high-performance alternatives. Today, Non-asbestos Gaskets represent the standard for safe, reliable, and durable sealing across countless applications. These advanced materials combine safety with exceptional resistance to pressure, temperature, and chemicals, making them indispensable in industries from oil and gas to pharmaceuticals and food processing.
At Kaxite Sealing, with over two decades of specialization in advanced sealing solutions, we engineer our non-asbestos gaskets to meet the most demanding specifications. Our commitment is to provide not just a component, but a guarantee of system integrity, operational safety, and compliance.
Non-asbestos gaskets are manufactured from synthetic fibers, elastomers, and fillers, creating a composite material that matches or exceeds the performance of historical asbestos sheets. The key components typically include:
Our product range is categorized by grade, each designed for specific service conditions. Below are detailed specifications for our flagship grades.
| Grade Code | Primary Composition | Temperature Range | Pressure Range | pH Range | Key Applications |
|---|---|---|---|---|---|
| KX-NA1500 | Aramid fiber, NBR binder | -40°C to +200°C (-40°F to +392°F) | Up to 1500 psi (103 bar) | 2 - 12 | Hydraulic systems, pumps, general industrial piping, hot oils. |
| KX-NA2100HT | Aramid/Glass fiber, SBR binder | -50°C to +300°C (-58°F to +572°F) | Up to 2100 psi (145 bar) | 1 - 14 | Superheated steam, high-temperature flanges, heat exchangers. |
| KX-NA1800CR | Carbon fiber, FKM binder | -20°C to +250°C (-4°F to +482°F) | Up to 1800 psi (124 bar) | 0 - 14 (Full range) | Chemical processing, aggressive acids/alkalis, refinery applications. |
| KX-NA900F | Mineral fibers, Food-grade elastomers | -30°C to +150°C (-22°F to +302°F) | Up to 900 psi (62 bar) | 4 - 10 | Food & Beverage, pharmaceutical, potable water (FDA, NSF 61 compliant). |
| Property | Test Method | KX-NA1500 | KX-NA2100HT | KX-NA1800CR | KX-NA900F |
|---|---|---|---|---|---|
| Tensile Strength (MPa) | ASTM F152 | 13.0 | 16.5 | 14.0 | 9.5 |
| Compressibility (%) | ASTM F36 | 12 ± 3 | 10 ± 2 | 8 ± 2 | 15 ± 4 |
| Recovery (%) | ASTM F36 | 50 | 45 | 40 | 55 |
| Creep Relaxation (%) | ASTM F38 | 25 | 20 | 18 | 30 |
| Density (g/cm³) | ASTM D792 | 1.75 | 1.90 | 1.85 | 1.60 |
| Thermal Conductivity (W/m·K) | ASTM E1225 | 0.18 | 0.22 | 0.25 | 0.15 |
What exactly are Non-asbestos Gaskets?
Non-asbestos gaskets are sealing sheets manufactured using man-made organic and inorganic fibers (like aramid, glass, or carbon) bound with elastomers such as NBR or SBR. They are designed to replicate the sealing performance of traditional asbestos gaskets but without the associated health hazards, offering a safe, high-performance alternative for containing fluids and gases under pressure and temperature.
Are Non-asbestos Gaskets as durable as traditional asbestos gaskets?
Yes, modern high-quality non-asbestos gaskets, such as those from Kaxite Sealing, are engineered to meet or exceed the performance of asbestos materials. They provide excellent tensile strength, thermal stability, and creep resistance. Advancements in fiber technology and binder systems have resulted in products that often demonstrate superior consistency and reliability in specific aggressive environments compared to historical asbestos materials.
How do I select the correct Non-asbestos Gasket grade for my application?
Selection is based on the service conditions of your application. The primary factors are: 1) Media: Identify the chemical compatibility of the gasket material with the fluid or gas. 2) Temperature: Ensure the gasket's operating range covers both continuous and peak temperatures. 3) Pressure: The gasket must withstand the system's maximum pressure. 4) Flange Type & Condition: Consider surface finish and bolt load. Consulting Kaxite Sealing's technical datasheets or our engineering team is recommended for critical applications.
Can Kaxite Sealing Non-asbestos Gaskets be used in food-grade applications?
Absolutely. Our KX-NA900F grade is specifically formulated using FDA-compliant ingredients and is certified to NSF/ANSI 61 for potable water contact. It is designed for use in food, beverage, pharmaceutical, and sanitary processing where non-toxicity and cleanability are paramount, providing a safe seal without risk of contamination.
What is the proper installation procedure for these gaskets?
Correct installation is critical for performance. Key steps include: 1) Ensure flanges are clean, undamaged, and aligned. 2) Select the correct gasket size and thickness for the flange and conditions. 3) Use a suitable, compatible lubricant on bolts if specified. 4) Follow a cross-bolting pattern (star pattern) to apply torque in multiple stages (e.g., 30%, 60%, 100% of final torque) to ensure even compression. Always refer to the specific torque values recommended by Kaxite Sealing for the gasket grade and flange specification.
How do Non-asbestos Gaskets handle thermal cycling and creep relaxation?
High-quality grades are designed to minimize creep relaxation—the loss of bolt load over time under pressure and temperature. Materials like our KX-NA2100HT have a high recovery percentage and low creep relaxation value, allowing them to maintain a tight seal despite temperature fluctuations. The synthetic fibers provide dimensional stability, preventing excessive softening or brittleness during cycles.
Are there any specific storage or handling requirements?
Store gaskets in a cool, dry environment away from direct sunlight, ozone sources (like electric motors), and extreme temperatures. They should be kept flat to avoid bending or warping. Avoid contact with oils, solvents, or chemicals before installation. Proper storage preserves the material properties and ensures optimal performance upon use.
What certifications do Kaxite Sealing Non-asbestos Gaskets hold?
Our products are manufactured under a strict quality management system certified to ISO 9001. Specific grades hold certifications such as NSF 61, FDA CFR 177.2600 compliance, and are tested to meet international standards including ASTM, DIN, and JIS. Certificates of Conformance and Material Test Reports are available upon request.
