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Spiral Wound Gaskets Custom

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Spiral Wound Gaskets

Available in several standard shapes 
Style Product Description
W Winding only, without inner and outer rings.
RW Spiral Wound Gasket with outer ring.
RWI Spiral Wound Gasket with inner and outer ring.
WI Spiral Wound Gasket with inner ring.
RH Spiral Wound Gasket with Ribs for Heat Exchanger
RS Spiral Wound Gasket with Special Shape

These gaskets are manufactured following International specifications such as ASME B16.20, EN 1514-2, DIN, JIS B 2404, etc.

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Product Details

Spiral Wound Gaskets 

Spiral wound gaskets — made with an alternating combination of formed metal wire and soft filler materials — form a very effective seal when compressed between two flanges. A V-shaped crown centered in the metal strip acts as a spring, giving the gaskets greater resiliency under varying conditions. Filler and wire material can be changed to accommodate different chemical compatibility requirements. If the load available to compress a gasket is limited, gasket construction and dimensions can be altered to provide an effective seal.  
A spiral wound gasket may include a centering ring, an inner ring, or both. The outer centering ring accurately positions the gasket within the flange and acts as a compression limiter, while the inner ring provides additional radial strength. The inner ring also reduces flange erosion and protects the sealing element.  
Resiliency and strength make spiral wound gaskets an ideal choice under a variety of conditions and applications. Widely used throughout refineries and chemical processing plants, they are also effective for power generation, aerospace, and a variety of valve and specialty applications.  

 

Common Metal Used 
Metal Material Minimum Maximum Abbreviation
℉ ℃ ℉ ℃
304SS -320 -195 1400 760 304
316LSS -150 -100 1400 760 316L
321SS -320 -195 1400 760 321
347SS -320 -195 1700 925 347
Carbon Steel -40 -40 1000 540 CRS
Alloy 20 -300 -185 1400 760 A-20
Hastelloy B2 -300 -185 2000 1090 HAST B2
Alloy C276 -300 -185 2000 1090 HAST C276
Incoloy 825 -150 -100 1600 870 IN 825
Inconel 625 -150 -100 2000 1090 INC 625
Inconel X750 -150 -100 2000 1090 INC X750
Monel 400 -200 -130 1500 820 MON
Nickel 200 -320 -195 1400 760 Ni
Titanium -320 -195 2000 1090 Ti

Common Filler Used 
Filler Material Minimum Maximum Abbreviation
℉  ℃ ℉ ℃
Flexible Graphite -350 -212 1000 550 F.G
Polytetrafluoroethylene -400 -240 490 250 PTFE
Mica -328 -200 1472 800 MI
Non Asbestos -184 -120 750 400 NA
Ceramic -350 -212 2000 1100 CER

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About Us
Ningbo Rilson Sealing Material Co., Ltd.
Ningbo Rilson Sealing Material Co., Ltd. was founded in 2007, is a professional Spiral Wound Gaskets manufacturer and Spiral Wound Gaskets supplier and located in Ningbo, Zhejiang Province. The manufacturing facility spans across 20,000 square meters and is dedicated to ensuring the secure and dependable operation of fluid sealing systems, offering clients the appropriate sealing technology solutions. We operate numerous production lines for sealing products, specializing in the design and manufacture of sealing gaskets and other sealing materials for the petroleum, chemical, power, shipbuilding, and machinery manufacturing sectors. Our primary products consist of spiral wound gaskets, ring joint gaskets, kammprofile gaskets, corrugated metal gaskets, insulation kit gaskets, and Non-asbestos gaskets, among others.
Our clientele hails from various parts of the globe, and through our extensive experience in the industry, we have earned the trust and recognition of our customers. Presently, we have obtained certifications from several prominent companies. Additionally, we have successfully achieved ISO9001:2015 quality management system certification, as well as the API 6A certificate, among others.
As a professional Spiral Wound Gaskets factory, The company is dedicated to delivering value to customers, promoting health and happiness among workers, and producing positive social effects. We uphold the core principles of integrity, precision, innovation, and mutual success. With the aspiration of becoming the preferred brand in industrial gaskets, we are committed to establishing ourselves as a top-tier player in the fluid sealing industry and working towards the objective of ensuring mutual satisfaction among customers and employees.
Certificate Of Honor
  • Api Certificates
  • ISO9001
  • ISO14001
  • ISO45001
News & Event
Spiral Wound Gaskets Industry knowledge

1. Spiral Wound Gaskets for Industrial Flange Sealing Applications

Spiral Wound Gaskets are high-performance sealing components designed for demanding industrial environments where high pressure, extreme temperature, and corrosive media are present. They are widely used in flange sealing systems across petroleum, chemical, and power generation industries due to their superior elasticity and recovery performance.

A typical spiral wound gasket consists of a V-shaped stainless steel strip alternated with soft filler materials such as graphite or PTFE. This structure allows the gasket to maintain tight sealing even under pressure fluctuations up to 2500 psi (approx. 170 bar).

（1）Key Industrial Applications

  • Oil and gas pipeline flange sealing systems
  • Chemical reactor and heat exchanger equipment
  • Power plant steam and turbine systems
  • Marine and offshore engineering structures

In these industries, leakage prevention is critical. Studies show that improper gasket selection accounts for nearly 60–70% of flange joint failures.

2. Why Custom Spiral Wound Gasket Manufacturer Matters for Flange Sealing

A custom spiral wound gasket manufacturer plays a vital role in ensuring sealing reliability because standard gaskets cannot always match complex flange geometries or specific working conditions.

For example, in high-temperature steam systems exceeding 600°C, standard graphite-filled gaskets may degrade faster, while customized designs using reinforced materials can extend service life by up to 40%.

（1）Advantages of Custom Manufacturing

  1. Precise dimensional matching for all flange standards (ANSI, DIN, JIS)
  2. Optimized material selection based on chemical compatibility
  3. Improved sealing performance under cyclic pressure
  4. Reduced maintenance downtime and leakage risk

（2）Material Selection Comparison Table

Common Material Combinations for Spiral Wound Gaskets in Different Conditions
Operating Condition Metal Winding Filler Material
High temperature steam 304 Stainless Steel Flexible Graphite
Strong acid corrosion 316L Stainless Steel PTFE

3. Professional Manufacturing Capability and Industry Solutions

High-quality sealing performance depends heavily on manufacturing precision and quality control systems. Leading gasket manufacturers invest in automated winding machines and strict testing procedures to ensure consistency.

Ningbo Rilson Sealing Material Co., Ltd. was founded in 2007, is a professional Spiral Wound Gaskets manufacturer and Spiral Wound Gaskets supplier and located in Ningbo, Zhejiang Province. The manufacturing facility spans across 20,000 square meters and is dedicated to ensuring the secure and dependable operation of fluid sealing systems, offering clients the appropriate sealing technology solutions. We operate numerous production lines for sealing products, specializing in the design and manufacture of sealing gaskets and other sealing materials for the petroleum, chemical, power, shipbuilding, and machinery manufacturing sectors. Our primary products consist of spiral wound gaskets, ring joint gaskets, kammprofile gaskets, corrugated metal gaskets, insulation kit gaskets, and Non-asbestos gaskets, among others.

（1）Key Quality Control Parameters

  • Thickness tolerance controlled within ±0.02 mm
  • Compression recovery rate ≥ 20%
  • Leakage rate tested under ASME standards

These strict controls ensure that sealing performance remains stable even under extreme working conditions, reducing leakage risks by more than 50%.

4. Market Trends and Selection Recommendations

The global spiral wound gasket market continues to expand due to increasing demand in energy, chemical processing, and offshore engineering sectors. Annual growth is estimated at 5%–7%.

（1）Selection Guidelines

  • Match gasket materials with operating temperature and media
  • Ensure compliance with ASME, EN, or DIN standards
  • Prefer manufacturers offering custom engineering support

（2）Future Development Direction

Future trends include advanced composite fillers, environmentally friendly non-asbestos materials, and smart sealing systems with predictive maintenance capabilities.

5. Frequently Asked Questions (FAQ)

Q1: What pressure range can spiral wound gaskets handle?
They typically handle from PN10 up to PN400 and ASME Class 150–2500 depending on design.

Q2: What information is required for custom gasket production?
Flange standard, dimensions, temperature, pressure, and media type are essential.

Q3: Why choose a custom manufacturer instead of standard products?
Custom solutions ensure better fit, improved sealing reliability, and longer service life.

Q4: What is the typical service life of a spiral wound gasket?
Under normal conditions, it ranges from 3 to 10 years depending on operating environment.