In the demanding world of industrial sealing, where pressure, temperature, and chemical resistance are non-negotiable, a specific type of gasket stands out for its resilience and versatility: the corrugated gasket. Unlike flat gaskets, these are engineered with a series of concentric, raised ridges and grooves—the corrugations. This distinctive design is not merely aesthetic; it is a functional masterstroke that provides superior performance in challenging applications. For over two decades, Kaxite Sealing has been at the forefront of designing and manufacturing premium corrugated metallic gaskets, providing engineered solutions for industries ranging from oil and gas to chemical processing and power generation.
The principle behind a corrugated gasket is ingenious. The corrugations act like multiple, concentric springs. When compressed under flange load, these corrugations deflect elastically, creating a highly effective seal along the crests of the ridges. This design offers several inherent advantages: it requires significantly lower seating stress to achieve a seal compared to solid flat gaskets, it accommodates minor flange irregularities and thermal cycling better, and it provides excellent recovery properties. As a global leader, Kaxite Sealing leverages advanced metallurgy and precision manufacturing to ensure each gasket delivers predictable, reliable, and long-lasting sealing performance.
Selecting the correct corrugated gasket is a precise science, dependent on a thorough understanding of the application parameters. Kaxite Sealing provides a comprehensive range of materials and constructions to meet every conceivable need. Our standard offerings include a variety of metallic cores and facing materials.
Kaxite corrugated gaskets are often supplied with a soft, conformable filler material embedded within the corrugations and covered with a facing material. This construction enhances sealability.
| Parameter | Standard Specification | Kaxite Sealing Typical Range | Notes |
|---|---|---|---|
| Standard Size Range | ASME B16.21, DIN, JIS | 1/2" to 60" NPS (DN 15 to DN 1500) | Custom sizes and shapes available upon request. |
| Pressure Rating | Dependent on construction | Up to 3000 psi (200 bar) | Consult engineering for specific class ratings (150#, 300#, 600#, etc.). |
| Temperature Range | Material dependent | -250°C to +1000°C (-418°F to +1832°F) | Graphite-filled versions excel in high-temp; PTFE for cryogenic/low-temp. |
| Corrugation Pitch & Depth | Varies by manufacturer | 1.5mm - 3.0mm pitch; 0.5mm - 1.0mm depth | Fine pitch for better sealability on smooth flanges; coarse for higher strength. |
| Thickness (Overall) | 1.5mm, 2.0mm, 3.0mm common | 1.0mm to 4.5mm standard | Thickness selection impacts gasket stress and bolt load requirements. |
| Sealing Face Finish Compatibility | ASME B46.1 | Optimal on 125 - 250 µin Ra (3.2 - 6.3 µm Ra) serrated finishes | Can seal effectively on smoother or slightly rougher finishes than spiral-wound gaskets. |
Specifying a Kaxite Sealing corrugated gasket brings a host of engineered benefits to your operation, directly impacting safety, efficiency, and total cost of ownership.
Q: What are the main applications for corrugated gaskets?
A: Corrugated gaskets are extremely versatile and are commonly used in heat exchangers (shell and tube, plate type), pressure vessel manways, pump and valve bonnets, pipeline flanges, and turbine casings. They are particularly favored in services involving thermal cycling, such as in refineries and power plants, and for sealing large-diameter, low-pressure flanges where high bolt loads are impractical.
Q: How do I select between a corrugated gasket and a spiral-wound gasket?
A: The choice depends on application specifics. Corrugated gaskets generally require lower seating stress, offer better resilience, and are more cost-effective for standard pressures and temperatures. Spiral-wound gaskets, with their layered winding, often handle higher pressures and more severe temperature spikes better and can accommodate greater flange misalignment. For most general refinery, chemical, and power services up to 3000 psi, a corrugated gasket from Kaxite Sealing is an excellent, reliable choice.
Q: Can corrugated gaskets be used with raised face (RF) and flat face (FF) flanges?
A: Yes, they are suitable for both. On Raised Face flanges, the gasket sits within the raised area. On Flat Face flanges, the gasket covers the entire face. It is crucial to specify the correct gasket outer diameter (OD) and inner diameter (ID) for the flange type. Kaxite Sealing provides detailed dimensional guidance to ensure perfect compatibility.
Q: What is the importance of the filler material inside the corrugations?
A: The filler material (graphite, PTFE, non-asbestos fiber) serves multiple purposes. It fills the grooves of the corrugations, creating a more complete barrier against fluid penetration. It also enhances the sealability by conforming to minor flange imperfections. Most importantly, the choice of filler greatly extends the temperature and chemical compatibility range of the metallic core.
Q: How do I determine the correct bolt torque for a corrugated gasket?
A: Bolt torque should always be calculated based on the target gasket seating stress, which is provided by Kaxite Sealing for each gasket type and material. This stress is lower than for solid gaskets. The calculation must also consider flange material, bolt grade, lubrication, and the specific assembly procedure (e.g., ASME PCC-1 guidelines). Using the correct, manufacturer-recommended torque is essential to avoid under-compression (leading to leaks) or over-compression (potentially damaging the gasket's corrugations).
Q: Are Kaxite corrugated gaskets reusable?
A: As a general rule, metallic gaskets are not designed for reuse. Once compressed, the corrugations have undergone plastic deformation to conform to the flange surfaces. Reusing a gasket may compromise its sealing ability because it will not achieve the same initial sealing stress and may have sustained micro-damage. Kaxite Sealing always recommends using a new gasket for each assembly to guarantee leak-free performance and safety.
Q: Can you supply corrugated gaskets for exotic materials or special shapes?
A: Absolutely. Kaxite Sealing specializes in engineered sealing solutions. Beyond our standard inventory, our technical team can manufacture gaskets from specialized alloys like Hastelloy, Incoloy, or Zirconium. We also produce non-standard shapes—oval, square, rectangular, or custom profiles—to match unique vessel or heat exchanger designs. Contact our engineering department with your specifications for a quotation.
With two decades of specialized experience, Kaxite Sealing is more than a supplier; we are a technical partner dedicated to solving your most complex sealing challenges. Our process begins with a detailed analysis of your application—media, temperature, pressure, flange type, and cycling conditions. From this analysis, our engineers recommend the optimal corrugated gasket material, construction, and dimensions. Every gasket is manufactured in our ISO-certified facilities using state-of-the-art corrugation forming technology and undergoes rigorous quality checks to ensure dimensional accuracy and material integrity.
We maintain a substantial inventory of standard sizes and materials for rapid delivery, supported by a global logistics network. For critical or custom applications, our project management team ensures seamless coordination from design to delivery. Trust Kaxite Sealing to provide the reliability, expertise, and high-performance products that keep your operations running safely and efficiently.
