In high-pressure sealing applications, selecting the right gasket is not just a choice—it’s a critical engineering decision that determines system integrity, safety, and longevity. Corrugated gaskets represent a premier solution in this demanding arena. Kaxite Sealing, with decades of specialized engineering expertise, manufactures these components to meet the most rigorous international standards. Their unique design, featuring a series of concentric ridges and grooves (corrugations), provides an exceptional combination of resilience and load-bearing capacity, making them indispensable for challenging flange connections.

Core Advantages of Corrugated Gaskets from Kaxite Sealing

The engineered profile of a corrugated gasket delivers distinct performance benefits over flat gaskets or other styles. Kaxite Sealing leverages advanced metallurgy and precision forming to maximize these advantages:

High Pressure and Temperature Resistance: The corrugated structure significantly increases stiffness, allowing the gasket to maintain a tight seal under extreme internal pressures and thermal cycling without extruding.
Excellent Sealing with Lower Bolt Load: The corrugations concentrate the seating stress along the crests, creating highly effective sealing lines. This often allows for adequate sealing with reduced flange bolting torque.
Superior Resilience and Recovery: The metal can flex within its elastic range, allowing the gasket to absorb vibrations, mechanical shocks, and fluctuations in system pressure or temperature without compromising the seal.
Reduced Risk of Creep Relaxation: Compared to softer, solid gaskets, the corrugated design is far more resistant to the gradual loss of clamping force over time under constant load and heat.
Versatility in Media: Available in a wide range of materials, they are suitable for sealing steam, hydrocarbons, chemicals, and various process gases.

Detailed Product Parameters & Technical Specifications

Kaxite Sealing produces corrugated gaskets to exacting specifications. Key parameters that define their performance are outlined below.

1. Standard Materials and Properties

Material selection is paramount for corrosion resistance and temperature capability.

304 / 304L Stainless Steel: Excellent general corrosion resistance. Temperature range: cryogenic to 800°F (427°C).
316 / 316L Stainless Steel: Enhanced resistance to chlorides and acids. Temperature range: cryogenic to 850°F (454°C).
321 Stainless Steel: Stabilized with titanium for improved resistance to intergranular corrosion. Ideal for continuous service in the 800-1500°F (427-816°C) range.
Inconel 600/625: High nickel-chromium alloys for outstanding oxidation resistance and strength in extreme temperatures up to 2000°F (1093°C).
Monel 400: Excellent resistance to seawater, hydrofluoric acid, and alkaline solutions.
Titanium: Exceptional strength-to-weight ratio and corrosion resistance in chlorides and oxidizing media.
Carbon Steel: Economical choice for non-corrosive applications like steam and oil up to 1000°F (538°C).

2. Standard Design Configurations

Kaxite Sealing offers several standard styles to suit different flange types and service conditions.

Style	Description	Typical Application
Plain Corrugated	Metal core only, with concentric corrugations. Can be supplied with or without a centering ring.	High-temperature heat exchangers, boiler manways, turbine casings.
Corrugated with Flexible Graphite Facing	Corrugated metal core fully laminated on both sides with a layer of flexible graphite (e.g., Grafoil®).	General-purpose high-temp/pressure services, flanges with minor imperfections. Excellent sealability.
Corrugated with PTFE Facing	Corrugated metal core fully laminated on both sides with a layer of PTFE.	Aggressive chemical services where metallic contamination must be avoided. Low temperature limit.
Corrugated with Non-Asbestos Facing	Core laminated with compressed non-asbestos fiber (e.g., aramid, glass fiber).	Moderate temperature and pressure applications requiring a robust, fire-safe gasket.
Double-Jacketed Corrugated	A corrugated metal core completely enclosed by a thin metal jacket (often soft iron or aluminum).	Very high-pressure applications; the jacket prevents direct contact of the process media with the corrugations.

3. Critical Dimensions and Tolerances

All Kaxite Sealing corrugated gaskets are manufactured to industry-standard dimensions or custom-engineered prints.

Parameter	Standard Range	Key Tolerances (Per ASME B16.20 / EN 1514)	Notes
Inner Diameter (ID)	15 mm to 3000+ mm	±0.5 mm for IDs ≤ 600 mm; ±0.1% for IDs > 600 mm	Must clear the bolt circle and flange bore.
Outer Diameter (OD)	Match to flange facing OD	±0.8 mm for ODs ≤ 600 mm; ±0.13% for ODs > 600 mm	Typically matches the outer contact surface of the flange.
Thickness (Gasket Body)	1.5 mm (1/16") to 4.5 mm (3/16")	±0.1 mm (±0.004")	Thicker gaskets offer more resilience; thinner gaskets require higher seating stress.
Corrugation Pitch (Width)	1.5 mm to 6 mm	±0.15 mm	Finer pitch increases the number of sealing lines.
Corrugation Depth	0.4 mm to 1.5 mm	±0.05 mm	Deeper corrugations increase spring-like behavior and resilience.
Raised Face (RF) Gasket Width	Per ASME B16.21 standard	Width: ±0.8 mm	For standard raised face flanges.

4. Pressure-Temperature Ratings

The allowable pressure for a corrugated gasket depends on the material, design, and temperature. The following table provides general guidelines for Kaxite Sealing's standard stainless steel corrugated gaskets with graphite facing.

Temperature (°C)	Temperature (°F)	Max. Recommended Pressure (bar)	Max. Recommended Pressure (psi)
-200 to 100	-328 to 212	220	3190
200	392	200	2900
300	572	180	2610
400	752	160	2320
500	932	135	1960
600	1112	110	1595

Note: Ratings are for reference. Always consult Kaxite Sealing engineering for the final recommendation based on specific service conditions, gasket style, and material.

Frequently Asked Questions (FAQ) About Corrugated Gaskets

Q: When should I choose a corrugated gasket over a spiral wound gasket?
A: The choice depends on the application. Corrugated gaskets are often preferred for their higher resilience and better performance in applications with significant thermal cycling or vibration. They typically require a lower bolt load to achieve a seal. Spiral wound gaskets, with their multiple plies of metal and filler, excel in extremely high-pressure and high-temperature services and can better handle more severe flange misalignment. For standard raised face flanges in heat exchangers, boilers, and many process piping applications, corrugated gaskets from Kaxite Sealing are a robust and reliable choice.

Q: Can corrugated gaskets be used on serrated flange faces?
A: Yes, they are highly suitable for serrated (phonographic) flange finishes. The concentric corrugations align well with the spiral serrations, creating an effective maze-like sealing path. The metal crests bite slightly into the flange grooves, enhancing the seal. Kaxite Sealing often recommends a corrugated gasket with a soft facing material like flexible graphite for use on serrated faces, as the facing material flows into the micro-imperfections, ensuring a leak-tight seal.

Q: How do I determine the correct thickness for my application?
A: The standard thicknesses are 1.5 mm and 3.0 mm. A 1.5 mm gasket requires a higher seating stress but is suitable for flanges with good flatness and parallelness. The 3.0 mm gasket offers greater resilience and is better for absorbing flange rotation, slight distortions, or thermal growth. For most industrial applications with raised face flanges, the 3.0 mm thickness is the common and recommended choice from Kaxite Sealing, as it provides a more forgiving and reliable seal.

Q: What is the purpose of the flexible graphite or PTFE facing on a corrugated metal core?
A: The facing serves multiple critical functions. First, it provides initial sealability at lower bolt loads by conforming to minor imperfections on the flange surface. Second, it acts as a barrier, protecting the metallic corrugations from direct corrosive attack by the process media. Third, the facing material fills any micro-gaps, creating a more leak-tight barrier, especially for gases. Kaxite Sealing uses high-purity, creep-resistant graphite and virgin PTFE to ensure optimal performance of the composite gasket.

Q: Are corrugated gaskets reusable?
A: Generally, no. Corrugated gaskets are considered single-use sealing elements. During installation, the metal corrugations are elastically and sometimes plastically deformed to conform to the flange faces. The facing material is also compressed. Removing the gasket breaks this formed seal, and the gasket will not reliably regain its original shape and sealing characteristics upon re-tightening. Kaxite Sealing strongly advises using a new gasket for any flange reassembly to ensure system integrity and safety.

Q: How do I specify a corrugated gasket from Kaxite Sealing?
A: To ensure you receive the optimal gasket for your service, provide the following information: Flange standard and size (e.g., ASME B16.5, 8" Class 300), Flange facing type (RF, FF, RTJ, etc.), Service temperature and pressure, Process media (including concentration), Flange material, and any specific standards or certifications required (e.g., NACE MR0175, TA-Luft, Fire Safe testing). Kaxite Sealing's engineering team can then recommend the precise material, style, and dimensions.

Industry Applications of Kaxite Sealing Corrugated Gaskets

The robustness and reliability of these gaskets make them a preferred choice across numerous sectors:

Power Generation: Steam turbine casings, boiler manways and handholes, heat recovery steam generators (HRSGs), and high-pressure feedwater heaters.
Oil & Gas Refining/Petrochemical: Heat exchangers (shell and channel), reactor flanges, fractionator manways, and high-temperature piping.
Chemical Processing: Reactor vessels, column flanges, and piping handling corrosive or high-purity chemicals.
Pulp & Paper: Digester and black liquor recovery boiler access doors and fittings.
Marine & Offshore: Engine exhaust systems, boiler fittings, and high-pressure pipe connections on ships and platforms.

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Corrugated Gaskets

Discover the advanced sealing solution with Corrugated Gaskets from Kaxite Sealing, crafted for superior leak prevention in demanding industrial applications. Featuring durable materials and innovative design, these gaskets ensure reliable performance in high-pressure and high-temperature environments. Ideal for engineers and industries seeking enhanced safety and efficiency, they deliver peace of mind by minimizing downtime and maintenance costs. Stand out with Kaxite's precision engineering and proven durability—choose our Corrugated Gaskets for unmatched resilience and value in sealing technology.