Non-Asbestos Flange Gaskets are high-performance, environmentally friendly sealing solutions designed to replace traditional asbestos gaskets in industrial piping systems. Manufactured from a composite of synthetic fibers (such as aramid or glass) and resilient elastomeric binders (like NBR or SBR), these gaskets offer exceptional mechanical strength and reliability . Shanxi Xinshunda Flange Manufacturing Co., Ltd. produces precision-cut non-asbestos gaskets that comply with international standards such as ASME B16.21 and DIN 2690. Our gaskets provide superior sealing performance, excellent chemical resistance, and enhanced safety, making them the ideal choice for modern industrial applications. Full material traceability and compliance certifications are available upon request.
Production Details
Our ASTM A193 bolts are produced using state-of-the-art CNC machinery to ensure every thread and hexagonal head meets precise engineering drawings. The raw materials undergo strict chemical composition analysis before entering the production line. Each fastener is subjected to rigorous surface inspection to ensure the absence of defects such as cracks, laps, or improper coating. The dimensional accuracy is verified using advanced measuring instruments, ensuring a perfect match with your mating flanges.
Product Properties and Application
Product Properties
Eco-Friendly & Safe: 100% asbestos-free, eliminating health hazards associated with asbestos exposure while complying with international environmental and safety regulations .
Excellent Chemical Resistance: Formulated to resist a wide range of media, including water, steam, oils, fuels, and mild acids or alkalis .
Superior Mechanical Strength: The integration of high-tensile synthetic fibers provides outstanding structural integrity, preventing gasket blowout under pressure fluctuations .
Optimal Sealing & Recovery: Exhibits excellent compressibility and recovery properties, ensuring a tight seal even under dynamic operating conditions and flange imperfections .
Application
Non-Asbestos Flange Gaskets are versatile and widely used across various industrial sectors. They are extensively applied in Water Treatment and Pipeline Systems, HVAC, Chemical Processing (for mild acids/alkalis), Food and Beverage Processing (using specific FDA-compliant grades), and General Utility Services . They serve as reliable sealing elements for pumps, valves, and heat exchangers where operating temperatures and pressures are moderate.
|
Parameter |
Specification |
|
Standard |
ASME B16.21, ASME B16.5, DIN 2690, BS 7531 (Grade X) |
|
Product Type |
Full Face Gasket (FF), Raised Face Gasket (RF), Inside Bolt Circle (IBC) |
|
Material Composition |
Aramid/Synthetic Fibers with NBR/SBR/EPR Binders |
|
Color |
Green, Blue, Black, Red (Depending on binder system) |
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Size Range |
1/2" to 24" (Metric DN15 to DN600) |
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Pressure Rating |
Class 150 to Class 300 (PN 10 to PN 40) |
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Thickness |
1/16" (1.5mm), 1/8" (3.0mm), or Customized (0.5mm to 6.0mm) |
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Operating Temperature |
-40°C to +370°C (depending on specific material grade) |
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Packing |
Plywood Cases, Wooden Pallets, or Custom Export Packaging |
Physical Properties
|
Property |
Value |
|
Tensile Strength |
7.0 MPa - 14.0 MPa (ASTM F152) |
|
Density |
1.8 g/cm³ - 2.2 g/cm³ (ASTM D792) |
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Compressibility |
7% - 25% (ASTM F36) |
|
Recovery |
30% - 65% (ASTM F36) |
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Creep Relaxation |
≤ 30% - 40% (under sustained load) |
|
Leakage Rate |
≤ 1.0 mL/min (ASTM F37) |
QA & QC
At Shanxi Xinshunda, we implement a stringent Quality Control system for our Non-Asbestos Flange Gaskets. We source premium raw materials and verify their composition upon arrival. During production, precision CNC cutting ensures exact dimensional accuracy according to ASME or DIN standards. Finished gaskets undergo rigorous testing for tensile strength, compressibility, recovery, and fluid resistance to guarantee a zero-defect product. Mill Test Certificates (EN 10204 3.1) and compliance reports (e.g., RoHS, REACH) are provided with every shipment.
Packing, Storage, Handling and Transportation
To prevent edge damage and surface contamination, each non-asbestos gasket is carefully inspected and individually wrapped in plastic film or placed in custom-fit cardboard separators. Multiple units are then securely packed in sturdy plywood cases or on wooden pallets with ample cushioning to prevent movement during transit. Each package is clearly labeled with the size, standard, material grade, and batch number. Store flat in a cool, dry, and dark environment (ideally between 10°C and 25°C) away from direct sunlight, heat sources, and ozone to prevent material aging and deformation.
Strategic Partners with Shanxi Xinshunda
With over 15 years of manufacturing expertise, Shanxi Xinshunda Flange Manufacturing Co., Ltd. has proudly supplied premium industrial flanges and sealing solutions to 3,800+ global customers across 70+ countries. We are committed to delivering safe, reliable, and high-performance sealing products that meet the evolving needs of modern industries, ensuring your critical piping systems operate safely and efficiently.
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