Spiral Wound Gasket

Spiral-gasket

Asian Sealing Products is a leading manufacturer of high-performance spiral wound gaskets designed to deliver exceptional sealing in harsh industrial environments.

Spiral wound gaskets are pre-compressed sealing components ideal for flange connections. They consist of a spiral wound metal core, typically constructed from high-grade stainless steel, interleaved with a soft filler material. This combination offers exceptional resilience and adaptability, ensuring a leak-proof seal even under extreme pressure and temperature fluctuations.

Our spiral wound gaskets, symbolizing quality and reliability, withstand extreme conditions, meeting global standards like ASME B16.20 to suit ASME B16.5, ASME B16.47 Series A & B, API 605, MSS SP44 Flanges, EN1514-2 to suit EN1092 Flange, BS 3381 to suit BS 1560 Flange, JIS B2404 to suit JIS B2220, JIS B2240 Flanges, and BS 4865-2 to suit BS 4504 Flange, Gaskets to suit BS 10, DIN flanges, etc. are compatible with various flange specifications. 

Construction and Materials:

Our spiral wound gaskets feature high-quality metal winding, providing structural strength and superior spring-back characteristics. This ensures the gasket maintains consistent contact pressure throughout its lifespan. 

At Asian Sealing Products, we offer a variety of filler materials like non-asbestos to suit specific applications:

  • Graphite: Ideal for high-temperature and pressure applications, offering excellent chemical resistance across a wide range of media.
  • PTFE (Polytetrafluoroethylene): PTFE is known for its exceptional chemical compatibility and low friction coefficient, making it suitable for various applications, including harsh chemicals and low-torque closures.

We offer optional inner and outer guide rings for improved centering and blowout prevention in critical applications.

Advantages of Spiral Wound Gaskets:

Spiral wound gaskets offer numerous advantages for demanding industrial applications:

  • Exceptional Sealing Performance: A strong metal core combined with flexible filler material ensures leak-proof sealing even under extreme pressure and temperature conditions.
  • Wide Temperature Resistance: Our gaskets can withstand various temperatures and pressures, making them suitable for various demanding applications. Handles temperatures up to +1000°C, ensuring stability in high-temperature applications.
  • Fluid Pressure Endurance: Our product’s Fluid Pressure Endurance feature enables it to withstand high fluid pressures of up to 250 bar. This exceptional capability ensures reliable sealing even in the most demanding and high-pressure environments.
  • Superior Chemical Compatibility: Available filler materials offer excellent resistance to various chemicals, ensuring reliable performance in harsh environments.
  • Excellent Compressibility: The compressible core allows the gasket to conform to slight surface irregularities, further enhancing sealing effectiveness.
  • Reusable: Spiral wound gaskets can often be reused after multiple flange separations, reducing maintenance costs.

Applications:

Asian Sealing Products’ spiral wound gaskets find application in various industries, including:

  • Petrochemical Processing
  • Oil and Gas Refining
  • Power Generation
  • Chemical Processing
  • Pulp and Paper Manufacturing
  • Shipbuilding
  • And many more 
    Standard and Custom Options:

    Asian Sealing Products offers a comprehensive range of standard-sized spiral wound gaskets of various thicknesses to cater to most industrial applications. Additionally, we understand that specific requirements may exist. Therefore, we offer custom gasket fabrication options, allowing you to specify size, material combinations, and other parameters to ensure a perfect fit for your application.

    Ready to experience the superior sealing performance of Asian Sealing Products’ spiral wound gaskets? Browse our selection of types   and standard sizes , or contact our experienced team today to discuss your custom requirements. We are here to assist you in selecting the optimal gasket solution 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 316 316 800°C Max 160 BHN Max Green
5 SS 316L 316L 800°C Max 160 BHN Max Green
6 SS 309 309 540°C Max 160 BHN Max No Colour
7 SS 310 310 540°C Max 160 BHN Max No Colour
8 SS 317L 317L 800°C Max 160 BHN Max Maroon
9 SS 321 321 850°C Max 160 BHN Max Turquoise
10 SS 347 347 850°C Max 160 BHN Max Blue
11 SS 430 430 440°C Max 190 BHN Max No Colour
12 Monel 400 MON 650°C Max 150 BHN Max Orange
13 Nickel 200 NI 550°C Max 160 BHN Max Red
14 Titanium Grade 2 TI 950°C Max 160 BHN Max Purple
15 Hastelloy Grade B2 HAST B 950°C Max 200 BHN Max Brown
16 Hastelloy Grade C-276 HAST C 950°C Max 200 BHN Max Beige
17 Inconel Grade 600 INC 600 1000°C Max 200 BHN Max Gold
18 Inconel Grade 625 INC 625 1000°C Max 240 BHN Max Gold
19 Inconel Grade X-750 INX 950°C Max 240 BHN Max No Colour
20 Incoloy Grade 800 IN 800 1000°C Max 200 BHN Max White
21 Incoloy Grade 825 IN 825 1000°C Max 190 BHN Max White
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

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.