ASME B16.20 Gaskets are high-quality, precision-engineered sealing solutions designed to fit perfectly between mating flanges in piping systems. This standard primarily covers Spiral Wound Gaskets (SWG), Camprofile Gaskets, and Metal Jacketed Gaskets used in conjunction with ASME B16.5 and B16.47 flanges. Shanxi Xinshunda Flange Manufacturing Co., Ltd. manufactures these gaskets using advanced automatic winding machines and premium raw materials to ensure exceptional resilience and a leak-proof seal under extreme pressure and temperature conditions. Full compliance with ASME B16.20 dimensions and tolerances is guaranteed, with comprehensive test reports provided 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
Excellent Sealability: The unique spiral winding structure provides outstanding resilience and recovery, ensuring a tight seal even under fluctuating pressures and temperatures.
High Pressure & Temperature Resistance: Engineered to withstand extreme operational conditions, making it suitable for critical high-stress environments.
Anti-Blowout Design: The integral outer ring acts as a compression stop, preventing the gasket from being blown out under high internal pressure.
Versatile Material Combinations: A wide selection of metals and fillers allows the gasket to be tailored to specific chemical compatibilities and operating conditions.
Application
ASME B16.20 Gaskets are extensively used in industries where reliable sealing is critical. They are the standard choice for Oil & Gas Pipelines, Petrochemical Refineries, Chemical Processing Plants, and Power Generation Facilities (including nuclear and thermal). Additionally, they are widely used in Heat Exchangers, Valves, and Pumps across various industrial sectors.
|
Parameter |
Specification |
|
Standard |
ASME B16.20, ASME B16.5, API 6A, DIN EN 1514-2 |
|
Product Type |
Spiral Wound Gasket (SWG), Camprofile Gasket, Metal Jacketed Gasket |
|
Inner & Outer Ring Material |
Carbon Steel, 304/316 Stainless Steel, Monel, Inconel, Titanium |
|
Filler Material |
Flexible Graphite, PTFE, Ceramic Fiber, Asbestos-Free Fiber |
|
Size Range |
1/2" to 24" (Metric DN15 to DN600) |
|
Pressure Rating |
Class 150 to Class 2500 (PN 20 to PN 420) |
|
Gasket Type (SWG) |
Basic Type (S), With Inner Ring (R), With Outer Ring (C), With Both Rings (D) |
|
Operating Temperature |
-200°C to +800°C (depending on filler material) |
|
Packing |
Plywood Cases, Wooden Pallets, or Custom Export Packaging |
Physical Properties
|
Property |
Value |
|
Compressibility |
18% - 25% (ASTM F36) |
|
Recovery |
≥ 19% (ASTM F36) |
|
Density (Graphite Filler) |
1.0 g/cm³ - 1.3 g/cm³ |
|
Leakage Rate |
≤ 1 x 10⁻³ cm³/s (Helium Mass Spectrometer) |
|
Max. Operating Pressure |
2500 psi (172 bar) / Higher depending on class |
|
Max. Operating Temperature |
Up to 800°C (1472°F) with graphite filler |
QA & QC
At Shanxi Xinshunda, we implement a rigorous Quality Control system for our ASME B16.20 gaskets. Every gasket undergoes precise dimensional checks using calibrated gauges to ensure compliance with ASME standards. We verify the material composition of both the metal windings and the filler using spectroscopic analysis. Compressibility, recovery, and helium leakage tests are conducted regularly to guarantee sealing performance. Mill Test Certificates (EN 10204 3.1) are provided with every shipment.
Packing, Storage, Handling and Transportation
To prevent damage to the delicate winding structure and sealing surfaces, each gasket is carefully cleaned and individually wrapped in plastic film or placed in custom-fit cardboard boxes. 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 code, and batch number. Store in a dry, climate-controlled environment away from direct sunlight and chemicals to preserve the integrity of the sealing materials.
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 ensuring your critical piping systems operate safely and efficiently, making us your trusted partner in the global energy and processing industries.
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