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Gasket Raw Materials

Rilson provides a range of high-quality gasket materials, such as winding wire, sheet, coil, graphite tape, PTFE tape, etc., which meet the requirements of international standards such as ASME B16.20, EN1514-2, DIN, JIS, etc., ensuring stable performance of the gasket and corresponding requirements of various application environments. 

· Winding Wire for Spiral wound gasket 

· Sheet 

· Coil 

· Flexible Graphite tape 

· PTFE tape for Spiral wound gasket 

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Product Details

Winding Wire for Spiral wound gasket 


Stainless Steel wire

304,304L,316L, 321, 410S, 317L, 347, Duplex 2205, Super Duplex 2507, Super Duplex 32760 

Nickel Alloy wire

Monel 400, Inc 825, Inc 600, Alloy 20, Nickel 200, Inc 625, Hast B3, Hast C276, Hast X750, Zirconium 702 

Titanium wire

Grade 2, Grade 7 

Sheet Our

sheet fully meets ASME B16.20 thickness specifications 

Stainless Steel Sheet

321, 317L, 347, 410S, Duplex 2205, Super Duplex 2507. 

Nickel Alloys Sheet

Monel 400, Inc 600, Inc 625, Inc 800H, Inc 825, Alloy 20, Nickel 200, Hast B3, Hast C276, Hast X750, Zirconium 702. 

Titanium Sheet

Grade 2, Grade 7. 

Coil 

Stainless Steel Coil   

304,304L,316L,321,347
0.019" thick in widths 1/4" up to and including 1.7/8"
0.024" thick in widths 1/4" up to and including 1.3/8"
0.125" thick in widths 3/8" up to and including 1.3/4" 

Carbon Steel Coil

0.019" thick in widths 1/4" up to and including 1.7/8"
0.024" thick in widths 1/4" up to and including 1.3/8"
0.125" thick in widths 3/8" up to and including 1.3/4"


Flexible Graphite tape 

Graphite tape is made of pure graphite coil through precision equipment processing, mainly used for the production of various gaskets and fillers, such as spiral wound gaskets, corrugated tape, graphite die-formed rings, etc. 


PTFE tape for Spiral wound gasket 

PTFE as an alternative to a normal virgin, as thanks to its softness and elasticity ensures a more uniform compaction of the spiral during the production phase. 

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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 Gasket Raw Materials manufacturer and Gasket Raw Materials 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 Gasket Raw Materials 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
Gasket Raw Materials Industry knowledge

In the modern industrial field, gaskets are an important part of the sealing system, and their performance is directly related to the safe operation and efficiency of the equipment. The selection and processing technology of gasket raw materials are the key factors that determine the performance of gaskets. Ningbo Rilson Sealing Material Co., Ltd., provides high-quality sealing solutions for industrial customers by virtue of in-depth research and innovative application of gasket raw materials.
There are many kinds of gasket raw materials, including non-metallic materials such as rubber, plastic, graphite, ceramic fiber, etc., as well as metal materials such as stainless steel, aluminum, copper and its alloys. Each material has its unique performance advantages and application scenarios. Ningbo Rilson Sealing Material Co., Ltd. keeps up with the development trend of the industry and continuously explores the application of new gasket raw materials to meet the diverse needs of different customers.
Research and development of high-performance non-metallic materials: The company is committed to the research and development of non-metallic materials with excellent corrosion resistance, high temperature resistance and wear resistance, such as high-performance fluororubber, reinforced polytetrafluoroethylene, etc. These materials can not only maintain stable sealing performance under extreme working conditions, but also effectively extend the service life of gaskets.
Innovation of metal-non-metal composite materials: In order to further improve the comprehensive performance of gaskets, Ningbo Rilson Sealing Material Co., Ltd. is also actively developing metal-non-metal composite materials. By combining the strength of metal materials and the sealing properties of non-metallic materials, composite gaskets with both high strength and good sealing properties are created. This material performs well under harsh working conditions such as high pressure, high temperature and corrosive media.
Promotion of environmentally friendly materials: With the continuous improvement of environmental awareness, Ningbo Rilson Sealing Material Co., Ltd. has also increased its efforts in the research and development and promotion of environmentally friendly gasket raw materials. The company is committed to developing non-toxic, harmless and recyclable gasket materials to reduce pollution and burden on the environment.

As a leading enterprise in the sealing materials industry, Ningbo Rilson Sealing Material Co., Ltd. has made remarkable achievements in the innovative application of gasket raw materials. The company not only has advanced R&D capabilities and production equipment, but also has established a complete quality management system and after-sales service system to ensure that customers are provided with high-quality products and services.
Customized services: The company provides customized gasket solutions based on the specific needs and working conditions of customers. By deeply understanding the needs and application scenarios of customers, the company can provide customers with the most suitable gasket materials and specifications to ensure the optimization of sealing effect.
High-quality production: The company adopts advanced production equipment and processes to ensure that the quality and performance of gasket products reach the international advanced level. At the same time, the company has also established a strict quality inspection system to conduct strict quality inspection and control on each batch of products to ensure the stability and reliability of the products.
Professional technical support: The company has a professional technical team that can provide customers with comprehensive technical support and solutions. Whether it is product selection, installation or problem handling during use, the company can provide professional guidance and assistance to ensure that customers can use and maintain gasket products smoothly.
The innovative application of gasket raw materials is the key to improving sealing performance. Ningbo Rilson Sealing Material Co., Ltd. provides high-quality sealing solutions for industrial customers with in-depth research and innovative application of gasket raw materials. The company will continue to adhere to the principle of "quality first, customer first" and continuously promote the development and progress of the sealing materials industry.