304ss/316ss Corrugated Metal Graphite Gasket

The corrugated metal graphite gasket consists of a metallic core, typically 304 stainless steel or 316L stainless steel, with concentric corrugations. This metal substrate is laminated on both sides with high-purity expanded graphite layers. This composite construction combines the mechanical strength and blowout resistance of a metallic gasket with the superior sealing properties and compressibility of graphite. It serves as a high-performance alternative to spiral wound gaskets in applications with limited bolt load or narrow flange faces.

Technical Specifications

Functional Advantages and Design Characteristics

The corrugated metal gasket with graphite facing is engineered for industrial piping systems and heat exchanger sealing where thermal cycling is prevalent. The concentric corrugations create a "labyrinth" effect, providing multiple sealing points across the flange face. This structural design ensures low stress-to-seal requirements, making it suitable for standard ASME B16.21 flanges and glass-lined equipment.

• Chemical Resistance: The 316ss core provides enhanced resistance to pitting corrosion and chloride-induced stress corrosion cracking.
• Thermal Stability: Capable of maintaining structural integrity under rapid thermal fluctuations and high-temperature steam services.
• Low Bolt Load Performance: The soft graphite layer flows into flange surface irregularities even under reduced torque, preventing fugitive emissions.
• Blowout Safety: The corrugated metal carrier prevents the gasket from extrusion under high-pressure spikes, a common failure mode in non-reinforced materials.

Industrial Applications

These gaskets are extensively utilized in petrochemical refining, power generation facilities, and marine engineering. Specific use cases include flue gas ducting, high-pressure steam valves, and acid processing units. Because the graphite layers are non-stick, maintenance cycles are shortened due to easy removal from flange surfaces during inspections.

Frequently Asked Questions

How does a corrugated metal graphite gasket compare to a standard spiral wound gasket in low-load applications?

A corrugated metal graphite gasket requires significantly lower seating stress than a spiral wound gasket to achieve a gas-tight seal. This is particularly critical in large-diameter flanges or systems with limited bolt tensioning capacity. Jiangsu Jintai Sealing Technology Co., Ltd., founded in 2004 and located on Xingyuan Road, Yuanzhu Industrial Park, Taixing, has conducted extensive scientific experiments to optimize these corrugated profiles. Our high-end brand, Nofstein, utilizes advanced manufacturing processes to ensure these gaskets adapt to changing market needs while maintaining superior recovery rates compared to rigid metal jackets.

Can these gaskets be used in environments with strict environmental protection and safety certifications?

Yes. Our products have achieved CCS classification society quality system identification and have passed the CiT test for environmental protection, as well as testing by the Chinese Academy of Coal Sciences. Jiangsu Jintai Sealing Technology Co., Ltd. operates with sound quality management manuals and monitoring systems within our sealing technology industrial park, which was put into production in 2013. We specialize in environment-friendly asbestos-free gaskets and high-performance metal composites. Our Nofstein brand focuses on providing technical sealing solutions that meet the rigorous safety standards required in shipping, power, and chemical industries globally.

What manufacturing standards and material origins are available for international projects?

We manufacture according to ASME, DIN, JIS, and EN standards to facilitate global compatibility. Jiangsu Jintai Sealing Technology Co., Ltd. maintains a professional foreign trade group with rich experience in exporting to Eastern Europe, Southeast Asia, and Africa. As a large comprehensive sealing technology enterprise, we have cooperated with well-known brands such as Garlock, Flexitallic, and Novus. This experience allows us to provide 304ss and 316ss gaskets that meet international material specifications. Whether for hydraulic systems or insulation materials, our firm confidence and technical capacity enable us to undertake major international infrastructure projects.