Spiral Wound Gasket

Spiral-gasket

Spiral Wound Gaskets: The Ultimate Sealing Solution for Industrial Applications

At Asian Sealing Products, we specialize in providing premium sealing solutions engineered to deliver optimal performance and durability. Among our diverse range of gasket offerings, the Spiral Wound Gasket stands out as one of the most versatile and effective sealing solutions for industries that demand precision, reliability, and resilience.

Our Spiral Wound Gaskets are designed to meet the most rigorous demands of various industries, including chemical processing, power generation, oil and gas, pharmaceuticals, food and beverage, and more. As an established gasket manufacturer, we are committed to providing high-quality, custom-engineered sealing products tailored to your needs.

What Are Spiral Wound Gaskets?

A Spiral Wound Gasket (SWG) is a type of gasket made from alternating layers of metal strips and non-metallic filler materials, wound in a spiral formation. This construction creates a flexible, yet durable, sealing element that can accommodate a wide range of temperature and pressure conditions.

The metal winding imparts strength and resilience, while the filler material—often made of graphite, PTFE, or other sealing materials—enhances the gasket’s ability to seal effectively, even in harsh, chemically aggressive environments.

Spiral Wound Gaskets are widely used in industries where tight seals are required to maintain system integrity, prevent leakage, and ensure operational safety. They are well-suited for high-pressure, high-temperature applications and environments prone to vibration and thermal expansion.

Key Features of Spiral Wound Gaskets

1. High Performance Under Extreme Conditions

Spiral Wound Gaskets are designed to withstand extreme temperatures and pressures, making them ideal for applications in petrochemicals, refineries, and power plants. Withstanding temperatures as high as 1000°C and pressures up to 2500 psi, they offer exceptional sealing performance in demanding environments.

2. Durability and Reliability

Due to the unique construction of a Spiral Wound Gasket, it maintains its sealing properties over time, even in the face of mechanical stress, temperature fluctuations, and aggressive chemicals. This reliability ensures long-term performance, reducing the need for frequent replacements or maintenance.

3. Leak-Free Operation

One of the primary advantages of a Spiral Wound Gasket is its ability to provide a leak-tight seal, preventing the loss of critical fluids or gases. This is crucial in industries where even a small leak can lead to significant operational risks, safety hazards, or environmental damage.

4. Flexibility and Conformability

Spiral Wound Gaskets can conform to the flange surface, ensuring a tight and consistent seal. This adaptability makes them suitable for use in flanges with imperfections, or those exposed to dynamic movements, such as thermal expansion or mechanical vibration.

5. Chemical Resistance

Depending on the choice of filler material (e.g., graphite, PTFE, ceramic fiber), Spiral Wound Gaskets offer excellent resistance to aggressive chemicals, acids, and alkalis. This makes them a go-to choice for industries dealing with corrosive fluids, such as chemical plants and refineries.

6. Easy to Install

The spiral wound design allows for easier installation, even in constrained spaces. Their flexibility and ability to adjust to flange irregularities ensure a tight seal without the need for excessive tightening or special tools.

Applications of Spiral Wound Gaskets

Spiral Wound Gaskets are used across a broad spectrum of industries, including:

1. Oil and Gas

Spiral Wound Gaskets are widely used in upstream, midstream, and downstream applications in the oil and gas industry. They are essential for sealing pipelines, pressure vessels, heat exchangers, and flanges where high temperatures and pressure fluctuations are common.

2. Chemical Processing

Chemical plants rely on Spiral Wound Gaskets for sealing reactor vessels, pipes, and other critical equipment. These gaskets prevent the leakage of hazardous chemicals and ensure that toxic substances are safely contained.

3. Power Generation

Power plants, including nuclear and thermal plants, require high-performance sealing solutions to withstand extreme temperatures and pressures. Spiral Wound Gaskets ensure optimal sealing in turbines, boilers, and heat exchangers.

4. Pharmaceutical and Food Processing

With the added benefit of corrosion resistance and non-reactivity, Spiral Wound Gaskets are used in pharmaceutical and food processing industries for sealing equipment like reactors, mixers, and sterilizers.

5. Water Treatment and HVAC

Spiral Wound Gaskets are commonly used in water treatment plants and HVAC systems to ensure reliable sealing, especially in environments that involve the transmission of fluids under pressure.

Benefits of Choosing Asian Sealing Products

1. custom-Engineered Solutions

At Asian Sealing Products, we understand that each application has unique requirements. We offer customized Spiral Wound Gaskets tailored to your specific needs, ensuring you receive the best sealing solution for your system’s performance and budget.

2. Expert Manufacturing

As a leading gasket manufacturer, we utilize state-of-the-art manufacturing processes to produce Spiral Wound Gaskets that meet the highest standards of quality and performance. Our gaskets are tested rigorously to withstand the most challenging operational environments.

3. High-Quality Materials

We source only the highest-quality materials for the production of our Spiral Wound Gaskets, including durable metals such as stainless steel, carbon steel, and alloy steels, and premium filler materials like graphite, PTFE, and ceramic fiber. This ensures that our gaskets offer optimal performance, reliability, and longevity.

4. On-Time Delivery

We understand the importance of time in the industrial world. That’s why we ensure that all orders are delivered promptly, allowing you to keep your projects on schedule and your operations running smoothly.

5. Global Shipping and Support

Our products are trusted by industries worldwide, and we provide comprehensive shipping and customer support services to ensure that your order arrives on time and in perfect condition, wherever you are located.

Types of Spiral Wound Gaskets

At Asian Sealing Products, we offer a variety of spiral wound gaskets tailored to meet your specific operational requirements.

  • Type CGI (Gasket with Centering Ring and Inner Ring): Has centering and inner rings for precise alignment and added support. Ideal for high-pressure, high-temperature environments.
  • Type CG (Gasket with Centering Ring): Type CG gasket has a centering ring for alignment and prevents shifting. Suitable for medium pressures and temperatures in automotive, HVAC, and plumbing.
  • Type GI (Gasket with Inner Ring): The inner ring provides support and reinforcement in high-pressure/corrosive environments. These gaskets are ideal for harsh industrial applications involving chemicals and solvents.
  • Type G (Gasket only): These are versatile and ideal for non-extreme pressure/temperature joints. This is common in the automotive, plumbing, and general industries.

Customization Options for Spiral Wound Gaskets

Every industrial application is different, and as such, we offer a wide range of customization options to meet the specific needs of our clients. These include:

  • Material Selection: Choose from a wide range of metals (stainless steel, carbon steel, Monel, Inconel, etc.) and filler materials (graphite, PTFE, mica, ceramic, etc.) to suit the specific chemical, thermal, and pressure requirements of your application.
  • Size and Thickness: Spiral Wound Gaskets are available in a variety of sizes and thicknesses, tailored to fit different flange dimensions and pressure ratings.
  • Inner and Outer Diameters: Customizable diameters allow the gasket to fit perfectly within your system’s flange setup.
  • Special Designs: We can provide Spiral Wound Gaskets with additional design features, such as reinforcement rings, for specific high-pressure applications.

Why Choose Asian Sealing Products for Your Spiral Wound Gasket Needs?

As a trusted leader in the gasket manufacturing industry, Asian Sealing Products is committed to delivering the highest-quality Spiral Wound Gaskets that meet the most stringent standards. We offer:

  • Comprehensive Expertise: With years of experience in gasket manufacturing, we offer valuable technical support and guidance to help you select the perfect sealing solution for your business.
  • Certifications and Standards: Our gaskets comply with global industry standards like ASME B16.20 and are compatible with various flange specifications, including ASME B16.5, ASME B16.47 Series A & B, API 605, MSS SP44 Flanges, EN1514-2, BS 3381, JIS B2404, BS 4865-2, DIN 2632 and more, ensuring quality and safety in all applications.
  • Competitive Pricing: We offer cost-effective solutions without compromising quality, helping you optimize your sealing costs.
  • Sustainability: Our products are designed to be long-lasting and contribute to the sustainability of your operations by minimizing downtime, maintenance, and replacement costs.

Get in Touch with Us Today

If you’re looking for a high-performance Spiral Wound Gasket solution, Asian Sealing Products has you covered. Whether in the chemical, petrochemical, oil & gas, or any industry requiring robust sealing solutions, our Spiral Wound Gaskets will meet your toughest demands.

Contact us today to discuss your specific needs or request a quote. Our expert team is here to assist you in selecting the perfect gasket for your application.

Product Details
  • Solid metallic inner & outer ring
  • Suitable for high pressure and temperature applications
  • Standard spiral wound gasket for raised face applications
  • Prevents turbulence and erosion damage to flange
  • Prevents damage to the gasket bore and inner windings
  • Inner ring acts as a heat shield and as a corrosion barrier
  • Wide choice of materials for filler and metal strip
  • General and critical duties
  • Solid metallic outer ring used as a centering device and compression stop
  • Used mainly on raised face and flat face flanges
  • Wide choice of materials for filler and metal strip
  • General duties
  • Solid metallic inner ring
  • High pressure & high temperature capability
  • Male to female flanges in vessels, valves and pumps
  • Wide choice of materials for filler and metal strip
  • General and critical duties
  • Wide choice of materials for filler and metallic strip
  • Suitable for high pressure and temperature applications
  • Recommended flanges are tongue & groove, male to female and flat face to recess in vessels, valves and pumps
  • General and critical duties
SPIRAL WOUND GASKETS - Winding Materials : Temperature & Hardness Reference Chart

 

Sl.No Winding Material Marking Code Temperature Range Hardness Range Color Code
1 Carbon Steel CS (- 30°C to + 400 °C) 120 BHN Max Silver
2 SS 304 304 540°C Max 160 BHN Max Yellow
3 SS 304L 304L 540°C Max 160 BHN Max Yellow
4 SS 304H 304H Customer Requirement Customer Requirement No Colour
5 SS 309 309 540°C Max 160 BHN Max No Colour
6 SS 310 310 540°C Max 160 BHN Max No Colour
7 SS 316 316 800°C Max 160 BHN Max Green
8 SS 316L 316L 800°C Max 160 BHN Max Green
9 SS 316Ti 316Ti Customer Requirement Customer Requirement No Colour
10 SS 317L 317L 800°C Max 160 BHN Max Maroon
11 SS 321 321 850°C Max 160 BHN Max Turquoise
12 SS 321H 321H Customer Requirement Customer Requirement No Colour
13 SS 347 347 850°C Max 160 BHN Max Blue
14 SS 347H 347H Customer Requirement Customer Requirement No Colour
15 SS 410 410 Customer Requirement Customer Requirement No Colour
16 SS 430 430 440°C Max 190 BHN Max No Colour
17 SS 904L 904L Customer Requirement Customer Requirement No Colour
18 UNS N08367 AL-6XN Customer Requirement Customer Requirement No Colour
19 UNS S31254 SMO 254 Customer Requirement Customer Requirement No Colour
20 Duplex 32205 2205 Customer Requirement Customer Requirement No Colour
21 Duplex 31803 31803 Customer Requirement Customer Requirement No Colour
22 Duplex 32750 2507 Customer Requirement Customer Requirement No Colour
23 UNS S17700 17-7 PH Customer Requirement Customer Requirement No Colour
24 Monel 400 MON 650°C Max 150 BHN Max Orange
25 Nickel 200 NI 550°C Max 160 BHN Max Red
26 Titanium Grade 2 TI 2 950°C Max 160 BHN Max Purple
27 Titanium Grade 7 TI 7 Customer Requirement Customer Requirement Purple
28 Alloy 20 or Carpenter 20Cb3 A-20 Customer Requirement Customer Requirement Black
29 Hastelloy Grade B HAST B 950°C Max 200 BHN Max Brown
30 Hastelloy Grade B-2 HAST B-2 Customer Requirement Customer Requirement Brown
31 Hastelloy Grade B-3 HAST B-3 Customer Requirement Customer Requirement Brown
32 Hastelloy Grade C-276 HAST C276 950°C Max 200 BHN Max Beige
33 Hastelloy Grade C-22 HAST C22 Customer Requirement Customer Requirement Beige
34 Hastelloy Grade C-2000 HAST C2000 Customer Requirement Customer Requirement Beige
35 Hastelloy Grade X HAST X Customer Requirement Customer Requirement No Colour
36 Inconel Grade 600 INC 600 1000°C Max 200 BHN Max Gold
37 Inconel Grade 625 INC 625 1000°C Max 240 BHN Max Gold
38 Inconel Grade X-750 INX 950°C Max 240 BHN Max No Colour
39 Inconel Grade 718 INC 718 Customer Requirement Customer Requirement No Colour
40 Incoloy Grade 800 IN 800 1000°C Max 200 BHN Max White
41 Incoloy Grade 800H IN 800H Customer Requirement Customer Requirement White
42 Incoloy Grade 825 IN 825 1000°C Max 190 BHN Max White
43 Copper Copper Customer Requirement Customer Requirement No Colour
44 Copper Copper Customer Requirement Customer Requirement No Colour
45 Zirconium ZIRC Customer Requirement Customer Requirement No Colour
Note : The above colour code is identifying the spiral wound gasket for winding material, a continuous colour around the outer edge of centering outer ring.
SPIRAL WOUND GASKETS – Filler Materials : Temperature & Pressure Reference Chart
Sl.No Filler Material Marking Code Temperature Range Working Pressure Color Code
1 Graphite FG (- 200°C to + 450 °C ) 250 bar Max Grey Stripe
2 Polytetra Fluoro Ethylene (PTFE) PTFE ( – 150°C to + 240 °C ) 100 bar Max White Stripe
3 Mica Mica ( – 100°C to + 800 °C) 100 bar Max Light Blue Stripe
Note : The above colour code is identifying the spiral wound gasket for filler material, for below NPS 1-1/2″ shall have two stripes at 180° apart and for NPS 1-1/2″ & above size shall have four stripes at 90° apart.
SPIRAL WOUND GASKETS – TYPES AVAILABLE
Type Product Description Applications
CGI Spiral Wound Metallic Gasket with inner and outer rings, where the rings are made from the materials like carbon steel, stainless steel and other alloy metals. General-purpose sealing in diverse applications.
CG Spiral Wound Metallic Gasket with centering outer ring. This gasket type is well-suited for flange connections in diverse industries.
GI Spiral Wound Metallic Gasket with inner rings, typically as same as winding material. Ideal for applications requiring enhanced internal support and stability.
G Spiral Wound Metallic Gasket without a centering outer ring & inner ring. Suitable for flanges with well-aligned bolt holes, where a centering outer ring & inner ring is unnecessary.
SPIRAL WOUND GASKETS – Nominal Gasket Thickness & Compression Thickness Reference
Sl.No Nominal Thickness Compressed Thickness
1 3.20 mm (0.126 in) 2.40 mm – 2.60 mm (0.095 – 0.105) in
2 4.45 mm (0.175 in) 3.17 mm – 3.43 mm (0.124 – 0.135) in
3 6.35 mm (0.250 in) 4.60 mm – 4.80 mm (0.180 – 0.190) in
Note : This compressed thickness after applying of compression load as per ASME B16.20
Edn 2017, for gasket thickness 4.45 mm the require compression thickness is min 3.43 mm

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FAQ's

Our spiral wound gaskets can handle temperatures up to +1000°C, ensuring stability in high-temperature applications. This feature makes them ideal for industries with extreme temperature conditions.

Spiral wound gaskets have established themselves as the most dependable sealing components suitable for challenging, vital, and demanding applications.  Spiral  gaskets offer excellent sealing performance, compatibility with various media, resilience to high temperatures and pressures, and the ability to compensate for flange irregularities, making them a reliable choice for demanding sealing applications. 

Spiral wound gaskets find applications in industries such as Oil and Gas, Chemical Processing, Power Generation, Petrochemical, Water and Wastewater Treatment, Marine and Shipbuilding, Food and Beverage Processing, Aerospace, HVAC Systems, Mining, and Minerals Processing. Their versatile sealing capabilities and resilience make them reliable in demanding conditions.

Our gaskets undergo color coding for easy selection and identification. The color on the outer edge of the centering ring indicates both the winding and filler materials. Solid colors represent metallic winding material, while colored stripes designate filler materials. This system aligns with industry standards outlined in ASME B16.20.

The global gaskets and seals market was estimated to be USD 56.93 billion in 2021 and projected to grow at a CAGR of 4.1% over the forecast period . As per the PitchBook News and analysis ,the specific market size for spiral wound gaskets may require a more detailed analysis from industry reports, which could be obtained by referring to the sources mentioned in the search results.

The thickness of a spiral wound gasket directly influences its sealing performance and suitability for specific applications. Understanding and specifying the appropriate thickness is crucial to ensuring an effective seal in diverse industrial settings.

When placing an order, it’s essential to specify the gasket style (CGI, CG, etc.), nominal pipe size (NPS), pressure rating, applicable gasket standard (ANSI, ASME, etc.), preferred winding materials, outer ring material, and inner ring material. This ensures the selected gasket aligns with the application’s requirements and operating conditions.

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