Non-Asbestos Gaskets

Non - Asbestos Gaskets stand as high-performance sealing products, fabricated in strict accordance with the EN1514 - 1 standard. Made from Tesnit BA-U material, they exhibit excellent corrosion resistance and high-temperature performance, making them suitable for PN16 pressure ratings. With a diameter of DN200 and a thickness of 2mm, Non-Asbestos Gaskets offer stable performance and easy installation, positioning them as an optimal sealing alternative across various industries, including chemical and petroleum.

Thanks to their unique material design and manufacturing process, Non-Asbestos Gaskets demonstrate significant advantages in sealing performance, safety, and durability, making them the preferred choice in modern industrial sealing applications.  

1. Environmental Safety  

Non-Asbestos Gaskets are designed without asbestos, utterly free from asbestos fibers. This design effectively eliminates the health risks, including carcinogenic hazards and environmental harm, associated with asbestos dust.

Compliance: Non-Asbestos Gaskets comply with international environmental regulations, including the EU RoHS Directive (Restriction of Hazardous Substances), REACH Regulation (Registration, Evaluation, Authorization, and Restriction of Chemicals), and FDA standards (applicable in the food and pharmaceutical industries).  

Safety Certification: Non - Asbestos Gaskets, certified under the ISO 9001 Quality Management System, guarantee safety and consistency in both production and performance.

2. High-Temperature Resistance

Non-Asbestos Gaskets can operate stably within a wide temperature range of -50°C to +300°C. Certain specialized models, for instance, those featuring a PTFE coating, are capable of withstanding instantaneous temperatures up to + 400°C. 

Thermal Stability: Under continuous high - temperature conditions, Non - Asbestos Gaskets exhibit remarkable resistance to softening and deformation. Even when exposed to extreme heat for extended periods, they maintain their structural integrity. This ensures that the sealing performance remains stable, preventing any leakage or compromise in the systems where they are installed. This characteristic makes non - asbestos gaskets highly reliable in applications that demand consistent and efficient sealing under harsh thermal environments.

Low Thermal Expansion Coefficient: The material has a thermal expansion coefficient of approximately 10-15 µm/m·K, ensuring excellent dimensional stability during temperature fluctuations.  

3. Corrosion Resistance  

Non-Asbestos Gaskets exhibit excellent resistance to most acids, alkalis, oils, solvents, and steam.  

Examples:  

Acid Resistance: They can withstand strong acids, such as 10% sulfuric acid and 20% hydrochloric acid.  

Alkali Resistance: They are capable of withstanding strong alkalis such as 50% sodium hydroxide solution.

Oil Resistance: Suitable for media like mineral oil, lubricating oil, and fuel oil.

Coating Options: Non-Asbestos Gaskets with PTFE coating offer enhanced corrosion resistance, making them suitable for environments with strong acids, alkalis, and organic solvents.  

4. High Sealing Performance  

Non-Asbestos Gaskets typically have a compression rate of 10%-15% and a recovery rate of 50%-60%, ensuring reliable sealing under bolt preload.  

Sealing Pressure: Suitable for pressure ratings from PN6 to PN40 (i.e., 6 bar to 40 bar), with specific high-pressure models capable of withstanding up to 100 bar.  

Low Leakage Rate: Under ASTM F37 sealing tests, non-asbestos gaskets demonstrate excellent sealing performance. Lab tests indicate a leakage rate of less than 0.01 mg/s·m. Their quality and design ensure that they meet the stringent sealing needs of various industries, including chemical plants and power stations. 

5. Mechanical Strength  

Non-Asbestos Gaskets are reinforced with fibers (e.g., aramid fiber, glass fiber), providing excellent tensile strength, typically in the range of 10-15 MPa.  

Anti-Creep Properties: Non - Asbestos Gaskets exhibit remarkable stability under long-term compression. Their creep rate remains below 5%, which is a testament to their excellent durability. This low creep rate ensures that the sealing performance remains consistent over an extended period, making them a reliable choice for various applications.

Wear Resistance: The surface hardness (Shore hardness) typically ranges from 70 to 90 Shore A, offering excellent wear resistance and making them suitable for high-vibration environments.  

6. Easy Installation and Maintenance  

Non-asbestos gaskets are made from a soft material, allowing for easy cutting and shaping to adapt to various flange configurations.  

Easy Installation: Standard sizes comply with international standards such as EN1514-1 and ASME B16.21, ensuring compatibility with standard flanges.  

Optimized Bolt Torque: The recommended bolt torque ranges from 20 to 50 N·m, with specific values varying according to gasket thickness and flange size. This torque range is crucial for preventing over-compression, which could potentially damage non-asbestos gaskets.

7. Cost-Effectiveness and Long Service Life  

Under normal operating conditions, the service life of Non-Asbestos Gaskets can reach 3-5 years, significantly longer than traditional asbestos gaskets.  

Low Maintenance Costs: Their excellent durability and stability reduce the frequency of replacement, thereby lowering maintenance costs. 

High Cost-Performance Ratio: Although the initial cost of Non-Asbestos Gaskets is slightly higher than that of asbestos gaskets, their long-term performance and economic benefits make them a more cost-effective choice.  

With their environmental safety, high-temperature resistance, corrosion resistance, high sealing performance, and mechanical strength, Non-Asbestos Gaskets have become the preferred sealing product in modern industrial applications.