We produce metal spiral wound gaskets for high-pressure flange connections.

High-pressure flange connections are the unsung heroes of industrial operations. They're the silent guardians that keep pipelines sealed, pressure contained, and processes running smoothly—whether in the roaring turbines of a power plant, the vast networks of a petrochemical facility, or the hulls of ships braving stormy seas. But even the strongest flanges are only as reliable as the gaskets between them. A single faulty gasket can turn a routine operation into a costly disaster: leaks, downtime, safety hazards, and environmental risks. That's where metal spiral wound gaskets come in. For over a decade, we've specialized in crafting these critical components, designed to stand up to the toughest conditions and keep your operations secure. Let's dive into why spiral wound gaskets are the backbone of high-pressure systems, the technology behind them, and how we tailor them to your unique needs.

What Are Metal Spiral Wound Gaskets, and Why Do They Matter?

At their core, metal spiral wound gaskets are engineered to create a tight, durable seal between two flanges in high-pressure, high-temperature environments. Unlike simple rubber gaskets that might warp or degrade under stress, spiral wound gaskets are built with a unique structure: a metal strip (often stainless steel, a material prized for its strength and corrosion resistance) wound in a spiral, with a filler material—like graphite or PTFE—trapped between the layers. This design gives them the best of both worlds: the metal provides rigidity and resistance to pressure, while the filler conforms to irregularities in the flange surface, ensuring a leak-proof seal even when temperatures spike or pipes vibrate.

Think of it like a well-constructed sandwich: the metal "bread" holds everything together, while the filler "filling" adapts to the shape of the plate (or flange, in this case). This adaptability is crucial in high-pressure systems, where even the smallest gap can lead to catastrophic leaks. For example, in pipeline works that transport oil or gas over hundreds of miles, the pressure inside the pipes can reach thousands of pounds per square inch (PSI). A standard gasket might compress or crack under that strain, but a spiral wound gasket? It stands firm, maintaining its seal day in and day out.

Materials That Make the Difference: From Stainless Steel to Copper & Nickel Alloy

The secret to a spiral wound gasket's performance lies in its materials. We don't cut corners here—each component is chosen for its ability to thrive in specific environments. Let's break down the most common materials we use and why they matter:

Stainless Steel: A workhorse in the industry, stainless steel strips are ideal for general-purpose high-pressure applications. They resist corrosion, handle temperatures up to 1,500°F (815°C), and pair well with fillers like graphite for versatility. We often use stainless steel in power plants, where steam pipes operate at extreme temperatures, or in chemical processing, where corrosive fluids are common.
Copper & Nickel Alloy: When corrosion resistance is non-negotiable—like in marine & ship-building or coastal petrochemical facilities—copper & nickel alloy (Cuni) takes center stage. This material stands up to saltwater, acidic environments, and even seawater spray, making it a top choice for offshore pipelines or shipboard systems. For example, a spiral wound gasket made with Cuni strips and a graphite filler is a staple in LNG carriers, where it seals connections in cryogenic conditions without corroding.
Carbon & Carbon Alloy Steel: For heavy-duty structural works or low-corrosion environments, carbon steel strips offer strength at a cost-effective price point. They're often used in pipeline works for transporting water or non-corrosive gases, where pressure is high but chemical exposure is minimal.

The filler material matters too. Graphite is a favorite for its high-temperature tolerance and flexibility, while PTFE works best in chemical applications where purity is key (like pharmaceutical manufacturing). We match the metal strip and filler to your project's specific needs, ensuring the gasket doesn't just fit—it performs.

Where Spiral Wound Gaskets Shine: Real-World Applications

Spiral wound gaskets aren't just a one-size-fits-all solution—they're tailored to the unique challenges of different industries. Here are a few places where they're indispensable:

1. Petrochemical Facilities: Sealing the Heart of Energy Production

In petrochemical plants, pipes carry everything from crude oil to volatile gases, often at pressures exceeding 10,000 PSI and temperatures over 1,000°F. A single leak here could mean lost product, environmental damage, or worse. That's why we often supply custom spiral wound gaskets for these facilities—designed to fit unique flange sizes (like pipe flanges or steel flanges) and withstand the harsh mix of chemicals and heat. For example, a recent project involved a refinery in Texas needing gaskets for a new ethylene pipeline. We used stainless steel strips with a graphite filler, customized to their specific flange dimensions, ensuring a seal that could handle the pipeline's 12,000 PSI operating pressure.

2. Power Plants: Keeping the Lights On, Safely

Coal, natural gas, or nuclear power plants rely on pressure tubes to generate steam and drive turbines. These tubes operate under extreme thermal stress—imagine a pipe carrying 1,000°F steam at 3,000 PSI, expanding and contracting with each cycle. Spiral wound gaskets here need to flex with that movement without losing their seal. We recently worked with a nuclear power plant requiring gaskets for their secondary cooling system. Using nickel alloy strips (per RCC-M Section II nuclear tube standards) and a specialized filler, we ensured the gaskets could handle radiation exposure and temperature swings from 200°F to 800°F without degradation.

3. Marine & Ship-Building: Battling the Elements

Ships and offshore platforms face a double threat: high pressure from hydraulic systems and corrosive saltwater. Copper nickel flanges paired with spiral wound gaskets made of copper & nickel alloy are a common sight here. Take a cargo ship's ballast water system, for instance. These systems pump seawater in and out to stabilize the vessel, exposing gaskets to constant saltwater contact. A Cuni spiral wound gasket with a PTFE filler resists corrosion and maintains its seal, even after years of submersion and vibration.

Spiral Wound Gaskets vs. Other Gasket Types: Why Choose Spiral Wound?

Gasket Type	Max Pressure Rating	Max Temperature	Best For	Limitations
Spiral Wound	Up to 20,000 PSI	-425°F to 1,800°F	High-pressure pipelines, power plants, marine systems	Higher cost than basic gaskets; requires proper flange alignment
Rubber	Up to 500 PSI	-40°F to 400°F	Low-pressure water lines, HVAC systems	Degrades in high heat/chemicals; poor compression recovery
Ring Type Joint (RTJ)	Up to 15,000 PSI	-200°F to 1,200°F	Oil/gas wellheads, high-pressure valves	Requires special RTJ flanges; no tolerance for flange misalignment

*Table compares common gasket types; ratings may vary by material and design.

Custom Solutions: Gaskets Built for Your Exact Needs

No two projects are the same—and neither should your gaskets. That's why we specialize in custom spiral wound gaskets, tailored to fit your unique flange dimensions, pressure requirements, and environmental challenges. Whether you need a gasket for a one-of-a-kind nuclear reactor flange or a batch of gaskets for a standard pipeline, we start with a conversation: What's the operating pressure? Temperature range? What fluids or gases will it contact? Are there space constraints or special certifications (like ASME or RCC-M) required?

Take, for example, a recent request from a shipyard building a research vessel. They needed gaskets for a custom-built seawater cooling system, with non-standard flange sizes and exposure to saltwater and extreme vibration. We designed a solution using copper & nickel alloy strips (to resist corrosion) and a flexible PTFE filler (to handle vibration), with a special outer ring to ensure proper alignment during installation. The result? A gasket that fit perfectly, even with the flange's unique oval shape, and has now been in service for three years without a single leak.

Customization isn't just about size—it's about performance. We can adjust the winding density of the metal strip for higher pressure resistance, switch fillers for chemical compatibility, or add inner/outer rings for stability. If your project calls for something truly unique, we'll work with your engineering team to test prototypes and refine the design until it meets your specs.

Quality That Stands Up to Scrutiny: Our Manufacturing Promise

A gasket is only as good as the process that makes it. We take quality seriously, from raw material selection to final inspection. Here's how we ensure every spiral wound gasket leaves our facility ready to perform:

Rigorous Material Testing: Before any metal strip or filler enters production, we test it for strength, corrosion resistance, and compliance with industry standards (like ASTM or JIS). For example, our stainless steel strips undergo tensile strength tests to ensure they won't crack under pressure, while copper & nickel alloy strips are checked for corrosion resistance in salt spray chambers.
Precision Manufacturing: Our winding machines are calibrated to tolerances of ±0.001 inches, ensuring the spiral pattern is consistent and the gasket thickness is uniform. This precision is critical for creating a seal that distributes pressure evenly across the flange surface.
Extreme Condition Testing: Every batch of gaskets undergoes testing in our lab, where we simulate real-world conditions: high-pressure cycling (up to 20,000 PSI), temperature shocks (from -400°F to 1,800°F), and chemical exposure (soaking in acids, oils, or saltwater). If a gasket fails any test, we investigate and refine the process before moving forward.
Certifications You Can Trust: We're certified to ISO 9001 for quality management, and our gaskets meet standards like ASME B16.20 (for spiral wound gaskets), RCC-M (nuclear), and EEMUA 144 (for marine applications). For critical projects, we provide full traceability documentation, so you know exactly where each component came from and how it was tested.

Why Partner With Us for Your Spiral Wound Gasket Needs?

At the end of the day, a spiral wound gasket is more than just a piece of metal and filler—it's a promise of reliability. When you choose us, you're choosing a partner who understands the stakes: a failed gasket isn't just a part replacement; it's downtime, lost revenue, and potential risk. That's why we don't just sell gaskets—we solve problems. Whether you need a standard size for pipeline works, a custom design for a nuclear facility, or a rush order for a marine emergency, we're here to deliver quality, on time, every time.

So, if you're working on a project that demands the best in high-pressure sealing, let's talk. Tell us about your challenges, your specs, and your goals. We'll help you find the perfect spiral wound gasket—one that fits right, performs better, and gives you peace of mind, no matter how tough the conditions get.