10 Types of Gaskets Every Industrial Customer Should Know

In the world of industrial operations—whether you're overseeing a petrochemical facility, maintaining a power plant, or building a ship—there's a silent hero working behind the scenes: the gasket. These unassuming components sit between pipe flanges, valves, and fittings, creating a tight seal that prevents leaks, protects against pressure, and keeps critical systems running smoothly. But not all gaskets are created equal. Choosing the wrong one can lead to costly downtime, safety hazards, or even catastrophic failures. Let's explore the 10 most essential gasket types, their unique strengths, and where they shine in real-world applications—from marine shipyards to high-pressure pipeline works.

Why Gaskets Matter: More Than Just a "Spacer"

Think about a typical day in a power plant. Steam rushes through heat exchanger tubes at 500°C, while pressure tubes in petrochemical facilities carry corrosive fluids under extreme pressure. Without a reliable gasket, these systems would leak, risking environmental damage, production delays, and even worker injuries. Gaskets are the unsung guardians of industrial integrity, bridging the gap between imperfect surfaces (like pipe flanges or bw fittings) and ensuring that nothing escapes—or enters—where it shouldn't. They're the difference between a smooth-running operation and a crisis.

The Top 10 Gasket Types for Industrial Success

1. Spiral Wound Gaskets: The Workhorse of High Pressure

When you're dealing with high pressure and temperature—say, in a power plant's boiler tubing or a petrochemical refinery's pressure tubes—spiral wound gaskets are the gold standard. These gaskets are crafted by winding a thin metal strip (often stainless steel or carbon & carbon alloy steel) and a soft filler (like graphite or PTFE) into a spiral shape. The result? A seal that combines metal's strength with the filler's flexibility, handling pressures up to 20,000 psi and temperatures exceeding 1,000°C.

Marine engineers swear by them for ship-building projects, where saltwater corrosion and constant vibration demand durability. In pipeline works, they're paired with stud bolts & nuts to secure pipe flanges, ensuring leaks don't derail oil or gas transport. Pro tip: Always match the metal winding to your flange material—stainless steel for corrosive environments, carbon steel for general industrial use.

2. Ring Type Joint (RTJ) Gaskets: Sealing the Most Extreme Conditions

For applications where "good enough" isn't an option—like offshore drilling rigs or nuclear power plants—RTJ gaskets step up. These metal gaskets (usually made of stainless steel, nickel alloys, or copper & nickel alloy) are machined into oval or octagonal shapes, designed to fit into grooves on RTJ pipe flanges. When tightened with stud bolts, they deform slightly, creating a metal-to-metal seal that's impervious to high pressure, extreme temperatures, and aggressive media.

In the oil and gas industry, RTJ gaskets are non-negotiable for subsea pipelines, where the pressure of deep water and the volatility of hydrocarbons leave no room for error. Shipbuilders also rely on them for marine engines, where saltwater and vibration would quickly degrade weaker seals. Just remember: RTJ gaskets require precise flange alignment—skimping on installation here defeats their purpose.

3. Sheet Gaskets: Versatility for Everyday Needs

Walk into any industrial workshop, and you'll likely find sheet gaskets stacked on shelves. Made from flexible materials like rubber, cork, or non-asbestos fiber (bound together with resins), these gaskets are cut to size from large sheets, making them affordable and adaptable for low-to-medium pressure applications. They're the go-to for general plumbing, HVAC systems, and low-stress structure works where a custom fit is needed—think custom steel tubular piles or small-bore pipe fittings.

Rubber sheet gaskets, for example, are ideal for water or air lines in factories, thanks to their elasticity and low cost. Non-asbestos fiber gaskets, a modern upgrade from outdated asbestos versions, work well with carbon steel pipes in heating systems. Just keep them away from high temperatures or corrosive chemicals—their soft nature makes them prone to degradation under stress.

4. Metal Jacketed Gaskets: Strength Meets Flexibility

Imagine a gasket that can handle the heat of a power plant's boiler tubing *and* the corrosion of a marine environment. That's the metal jacketed gasket. These gaskets feature a rigid metal outer shell (stainless steel, copper, or nickel alloy) wrapped around a soft filler (graphite, PTFE, or ceramic). The metal jacket provides structural support and resists blowouts under high pressure, while the filler conforms to uneven flange surfaces for a tight seal.

They're a staple in industrial valves and pressure vessels, where temperatures can spike above 800°C. Petrochemical facilities love them for their resistance to oils and solvents, and shipbuilders use copper-nickel jacketed versions to stand up to saltwater. Installation tip: Torque the stud bolts evenly—too much pressure can crush the filler, while too little leaves gaps for leaks.

5. Kammprofile Gaskets: The Best of Both Worlds

For systems that demand both strength and precision—like high-pressure pipeline works or refinery equipment—Kammprofile gaskets deliver. These gaskets have a corrugated metal core (often carbon steel or stainless steel) with a soft facing layer (graphite or PTFE) bonded to both sides. The corrugations act as "mini-seals," while the soft facing fills in micro-imperfections on flange surfaces. The result? A seal that handles up to 15,000 psi and resists creep (slow deformation under pressure) better than many alternatives.

They're particularly popular in the chemical industry, where aggressive media and cyclic pressure changes test gaskets to their limits. When paired with bw fittings or threaded fittings, Kammprofile gaskets ensure long-term reliability in carbon & carbon alloy steel pipelines. Fun fact: Their name comes from the German word "Kamm," meaning "comb"—a nod to their ridged metal core.

6. PTFE Gaskets: The Chemical Resistant Champion

When your operation deals with acids, alkalis, or harsh solvents—think pharmaceutical plants, chemical refineries, or food processing—PTFE gaskets are your first line of defense. Made from polytetrafluoroethylene (PTFE), these gaskets are nearly inert, resisting attack from most chemicals. They also handle temperatures from -200°C to 260°C, making them versatile for both cryogenic and moderate heat applications.

However, PTFE has a Achilles' heel: it's prone to cold flow (slow deformation under constant pressure). To combat this, manufacturers often reinforce PTFE gaskets with glass fibers or metal inserts, creating "filled PTFE" versions that hold their shape better in high-pressure systems. In the food industry, pure PTFE gaskets are preferred for their non-toxic, non-stick properties—no risk of contaminating products.

7. Graphite Gaskets: Heat and Fire Resistant Workhorses

In environments where extreme heat is the norm—like power plant heat exchanger tubes, u bend tubes, or industrial furnaces—graphite gaskets thrive. Made from pure graphite or graphite-impregnated fibers, these gaskets handle temperatures up to 3,000°C (in inert atmospheres) and are impervious to most chemicals. They're also flexible, conforming to rough flange surfaces even after repeated thermal cycles.

Nuclear facilities rely on graphite gaskets for their radiation resistance, while petrochemical plants use them in high-temperature reactors. A word of caution: Graphite is electrically conductive, so avoid using it in systems where electrical isolation is needed. For steam applications, look for "expanded graphite" gaskets—they're softer and seal better at lower bolt torques.

8. Rubber Gaskets: The Affordable All-Rounder

Rubber gaskets are the unsung heroes of low-pressure, low-temperature systems. Made from natural rubber, neoprene, nitrile, or EPDM, they're elastic, easy to install, and budget-friendly. Natural rubber excels in water and air applications, while nitrile (Buna-N) resists oils and fuels—perfect for automotive or hydraulic systems. EPDM is the go-to for outdoor use, standing up to UV rays and ozone in marine or construction settings.

Custom rubber gaskets are widely available, too—suppliers can mold them into unique shapes for specialized pipe fittings or equipment. Just remember: Rubber breaks down quickly in high heat or harsh chemicals. A neoprene gasket might work great in a swimming pool pump, but swap it for PTFE if you're sealing a sulfuric acid line.

9. Camprofile Gaskets: The Marine and Offshore Specialist

Marine environments are brutal: saltwater corrosion, constant vibration, and extreme pressure fluctuations. Enter Camprofile gaskets, a close cousin of Kammprofile gaskets but optimized for offshore and ship-building use. They feature a solid metal core (often copper nickel or duplex stainless steel) with a graphite or PTFE facing, designed to seal even when flanges shift due to hull movement.

Offshore oil rigs use them on riser pipes, while shipyards install them on seawater cooling systems paired with copper nickel flanges. Their metal core ensures they won't blow out in rough seas, and the soft facing compensates for flange misalignment. If you're working in marine & shipbuilding, ask for Camprofile gaskets with a "hollow section" core—they're lighter and compress better than solid cores.

10. Non-Asbestos Fiber Gaskets: The Safe, Versatile Alternative

Before asbestos was banned, it was a common gasket material for its heat and chemical resistance. Today, non-asbestos fiber gaskets have taken its place, offering similar performance without the health risks. Made from aramid fibers, glass fibers, or carbon fibers bonded with rubber or resin, these gaskets are flexible, affordable, and suitable for a wide range of applications—from low-pressure water lines to medium-pressure steam systems.

They're a favorite in HVAC systems, where they seal ductwork and chilled water pipes, and in general industrial settings where cost and versatility matter most. Look for "compressed non-asbestos" (CNA) gaskets for better pressure resistance, or "reinforced non-asbestos" (RNA) for higher temperature tolerance up to 400°C.

Choosing the Right Gasket: A Few Final Tips

Selecting a gasket isn't just about matching materials—it's about understanding your system's unique demands. Ask yourself: What's the maximum pressure and temperature? What fluid or gas will it contact? Are there space constraints or flange type requirements (like sw fittings vs. threaded fittings)? And don't forget installation: Even the best gasket fails if torqued unevenly or paired with worn flanges. Always consult your supplier for custom solutions if standard sizes won't cut it—many offer both wholesale and custom options, from small rubber gaskets to large-diameter spiral wound designs for nuclear or aerospace applications.

At the end of the day, gaskets may be small, but their impact is huge. They're the difference between a plant running at peak efficiency and a crisis unfolding. By knowing these 10 types, you're one step closer to building a safer, more reliable operation—no matter the industry.