Top Stainless Steel Gasket Manufacturer in China
A gasket is a mechanical seal commonly used to fill cracks and prevent leakage when compressed. Stainless steel is an ideal material for gaskets because of its corrosion and moisture resistance.
DSR has extensive experience in metal gasket manufacturing, utilizing a fleet of imported CNC machines, die-casting machines, and stamping machines. Our craftsmen utilize advanced processes and various surface treatments to create highly durable and strong stainless steel gaskets.
Our engineers can analyze the required bolt stress for your application and increase the efficiency and lifecycle of your gasket. This provides a leak-free seal without impeding fluid flow, minimizing subsequent maintenance issues and downtime.
So if you’re looking for the right stainless steel gasket for your flange or pipeline, DSR is your trusted choice. We offer exceptionally durable stainless steel gaskets and offer discounts for the first order. Don’t hesitate, contact our 24-hour online customer service for a quote now.
Usually stamped or cut from stainless steel sheet (such as 304, 316, etc.), they feature a simple structure and are relatively inexpensive.
They are suitable for medium- and low-pressure environments, like heat exchangers and compressor flange connections.
Composed of alternating wound metal strips and filler layers (such as graphite or PTFE), they are usually made from 304/316 stainless steel with a surface coating. They offer high-temperature and high-pressure sealing capabilities.
The filler layer enhances sealing performance, while the inner and outer rings provide stability.
Solid metal rings, such as those made of stainless steel, are designed with chamfered or octagonal cross-sections and fit into flange grooves to create a high-pressure seal.
Commonly used in oil and gas, high-temperature, and high-pressure systems, they offer excellent pressure resistance.
Composed of a grooved metal core and a flexible filler layer, they combine the strength of metal with the sealing properties of a soft layer to accommodate even minor flange surface irregularities. Commonly used in thermal systems such as heat exchangers and chemical equipment.
A flexible filler (such as graphite) is enclosed in a stainless steel or metal casing. The metal casing protects the filler, enhancing sealing and pressure resistance.
Suitable for corrosive or high-temperature environments.
This corrugated metal structure improves flexibility and pressure-bearing capacity, while also enhancing sealing performance.
Commonly used in heat exchangers, compression systems, and other applications requiring high flexibility and sealing.
All kinds of Stainless Steel Gaskets We Can Provide
304 / 304L (Austenitic stainless steel)The most common and cost-effective, commonly used in general industrial and chemical environments.
The temperature resistance can reach about 760 °C, suitable for most non-corrosive working conditions.
Reducing the carbon content to reduce intergranular corrosion, suitable for welding environments.
316 / 316LAdding molybdenum improves pitting resistance and is suitable for corrosive media environments such as marine, chemical, and pharmaceutical industries.
It can be used in a wider temperature range (about 800 °C) and maintains stability.
321 / 347By adding titanium (321) or niobium (347), the intergranular corrosion resistance is improved, suitable for high temperature and long-term use, and the temperature resistance can reach 800–900 °C.
410 (Martensitic stainless steel)Excellent heat treatment performance, but poor corrosion resistance, suitable for high-temperature wear-resistant parts.
Special alloys and high-grade stainless steelssuch as 254SMO (super austenitic), Duplex/super duplex stainless steel, Inconel, Monel, Hastelloy, etc., for use in harsh working conditions such as extreme corrosion, high temperature, and high pressure.
Advantages of DSR Stainless Steel Gaskets
Stainless steel contains chromium (≥11%), which forms a passive oxide film on its surface. This film is highly corrosion-resistant, self-healing, and protects the substrate. It is particularly suitable for use in chemical, marine, food, and pharmaceutical environments.
Stainless steel gaskets maintain structural integrity in high-temperature environments (hundreds of degrees Celsius or even close to thousands of degrees Celsius) and high-pressure environments. They can withstand a wide temperature range and maintain sealing performance under high loads.
The metal material has excellent mechanical strength and creep resistance, remaining stable under multiple thermal cycles and mechanical loading.
The robust structure is resistant to crushing or failure, providing a long-lasting, reliable seal.
Stainless steel can be combined with alloying elements such as nickel, molybdenum, and nitrogen, allowing for a high degree of customization to meet diverse chemical environments, temperature, and pressure requirements.
Stainless steel has a high recycling rate, is resource-sustainable, and is charged with the green manufacturing concept.
The smooth surface is corrosion-resistant and easy to clean and inspect, reducing maintenance costs.
Various Applications of DSR Stainless Steel Gaskets
Stainless steel gaskets are often used in oil and gas pipeline systems, pressure vessels, valves, and other applications subject to high pressure to ensure reliable sealing and are not influenced by pressure changes.
In boiler systems, exhaust systems, and heat exchange equipment, gaskets can bear extremely high temperatures and cyclic thermal stress.
Stainless steel gaskets are effectively used in chemical, marine, desalination, and shipbuilding facilities exposed to acidic or alkaline environments.
Food processing machines and pharmaceutical manufacturing equipment use stainless steel gaskets because of their resistance to contamination, ease of cleaning, and excellent rust resistance, so they are suitable for sanitary sealing requirements.
In engines, fuel systems, exhaust systems, and other systems, gaskets must bear extreme temperatures, pressures, and oil. Stainless steel gaskets provide long-term, stable sealing.
Used in liquefied natural gas (LNG) and cryogenic chemical processes, some stainless steel materials keep their toughness and sealing properties even at low temperatures.
Laminated stainless steel shims are used in some mechanical structures to achieve precise fine-tuning and centering. These shims offer advantages in corrosion resistance and flatness, making them usually used in precision machinery.
The principle is to create a reliable static seal by compressing and filling tiny irregularities between the mating surfaces. The specific process is as follows:
Compression and Filling
During installation, the pressure applied by fasteners, such as bolts, deforms the gasket material, filling tiny gaps and irregularities between the two mating surfaces and producing a tight, sealed area.
Compression Retention and Elastic Recovery
After initial installation, the gasket relaxes due to internal stress and high temperatures, bringing in a decrease in compression force. Metal structures (such as spiral wound gaskets) use their elastic structure to restore the sealing pressure and keep the seal.
Material and Structural Advantages
Unlike soft gaskets, metal gaskets rely on their structural rigidity and inherent elastic properties to bear high pressure, high temperature, and shock loads, providing stable sealing and a long service life.
Stamping/die cutting: Directly stamping thin metal sheets by a die to form the gasket, offering fast production speeds and consistent size.
Laser cutting: Using a high-energy laser beam to melt metal, allowing for accurate cutting of complex edges.
Water jet cutting: Cutting metal using a high-pressure water jet mixed with abrasives.
CNC Machining: Cutting to shape using milling machines, lathes, and other methods.
Spiral winding: Alternating winding of metal strips and filler materials. Complex structures are used for high-pressure sealing.
Ring joint gasket production: Forging and then lathing a solid metal ring to ensure high sealing performance.
For the large-scale production of standard gaskets, stamping/die cutting is the most economical. For complex gasket shapes or small batches, laser cutting is more precise and flexible. For gaskets requiring difficult structures in extremely high-pressure or high-temperature environments, correspondingly more expensive manufacturing processes are required.
Graphite: The most common filler material, offering excellent thermal stability, resistance, and good compression-rebound properties. Its operating temperature range is approximately -200°C to +600°C.
PTFE: Its chemical inertness and excellent corrosion resistance make it perfect for extreme chemical environments. Its operating temperature range is approximately -260°C to +260°C.
Mica: Its resistance can withstand temperatures up to approximately 1000 °C. It is often used in extremely high-temperature sealing environments.
Ceramic materials: Stable, high-temperature resistant, and highly insulating.
Non-asbestos hybrid gaskets: Used as an asbestos alternative, offering both chemical resistance and safety.
