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Non Metallic Gaskets Custom

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Non Metallic Gaskets

Rilson manufactures Nonmetallic gaskets that meet ASME, JIS, BS, DIN & other international standards, offering a wide range of sealing solutions that are specifically designed to meet the needs of various industries. Our nonmetallic gaskets, made from materials such as

· Compressed Nonasbestos
· PTFE
· Graphite
· Rubber
· Cork
· Mica


provide chemical resistance, high-temperature capability, and
exceptional sealing performance for industrial applications.

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Product Details

Compressed Non-asbestos Gaskets

Compressed Non-asbestos Gaskets are sealing devices designed to create a tight, leak-proof connection between two flange surfaces in industrial applications. Compressed Non-asbestos Gaskets are a blend of fibers and rubber materials bound together. They are designed to create a tight seal between two flange surfaces in industrial applications.
A wide range of compressed sheet materials are available in a variety of fiber and rubber combinations that are chosen for their compatibility with specific chemicals and resistance to high temperatures. Sheet gaskets are designed with the compressibility necessary to fill in the voids of the flange surfaces and the resiliency to maintain the seal with temperature and pressure fluctuation.


PTFE Gaskets

PTFE (Polytetrafluoroethylene) has emerged as the common thermoplastic gasket material. PTFE's outstanding properties include resistance to temperature extremes from cryogenic to 500°F (260°C). PTFE is highly resistant to chemicals, solvents, caustics, and acids except for free fluorine and alkali metals. It has a very low surface energy and does not adhere to the flanges. PTFE gaskets can be supplied in a variety of forms; either as virgin or reprocessed material, and also with a variety of filler material.


Graphite Gaskets

Graphite gaskets are used to seal joints in adverse conditions. There are several types of graphite gaskets including: flexible, reinforced, tape, spiral, foil, and ring gaskets. These types of graphite gaskets all have properties in common including chemical inertness, high strength, resistance to creep, and low coefficient of friction.
Applications for graphite gaskets include pipework, heat exchangers, automotive engines, and petrochemical processing plants.
By using a graphite gasket, the gap in a joint can be more effectively sealed, which can increase the performance of the system. Graphite gaskets are desirable over other gaskets due to their longevity.


Rubber Gaskets

Rubber gaskets play a crucial role in sealing the interfaces between parts. Their primary purpose is to prevent leakage, ensuring airtight or watertight seals between two surfaces. These flexible components are commonly made from elastomers like neoprene, EPDM, silicone, or nitrile. Each material offers unique properties.

Cork Gaskets

The distinctive qualities of cork gaskets, which are well known for their flexibility and durability, make them widely used in a variety of industries. Cork gaskets are highly compressible and work well to seal joints, stopping leaks in commercial, residential, and automobile environments. They are durable in harsh conditions because of their innate resistance to chemicals and oil.

Mica Gaskets

Mica gasket material is exceptional in its resistance to high heat. At temperatures over 900 F, the ideal sealing material flexible graphite cannot be used.
Flexible graphite will coke at those elevated temperatures when oxygen is present, whereas mica gasket material will not (900 - 1850 F). Mica gaskets can be
very effective in sealing those high-temperature critical applications without failing due to the presence of oxygen.

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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 Non Metallic Gaskets manufacturer and Non Metallic 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 Non Metallic 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
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Non Metallic Gaskets Industry knowledge

1. Non Metallic Gaskets for Industrial Sealing Applications

Non Metallic Gaskets are widely used sealing components designed to prevent leakage between flange connections in industrial systems. Compared with metallic gaskets, non metallic gaskets offer excellent flexibility, chemical resistance, and cost efficiency, making them suitable for a broad range of operating conditions.

Industries such as petrochemical processing, power generation, water treatment, and food manufacturing rely heavily on non metallic gaskets because they can adapt to uneven flange surfaces while maintaining reliable sealing performance.

According to industry reports, proper gasket selection can reduce leakage-related maintenance costs by up to 35% and significantly improve equipment safety.

（1）Main Advantages of Non Metallic Gaskets

  • Excellent sealing performance under moderate pressure
  • Strong resistance to chemical corrosion
  • Lower installation and replacement cost
  • Suitable for a wide variety of flange systems

2. Non Metallic Gasket Material Selection Guide

A non metallic gasket material selection guide is essential for engineers and maintenance professionals because gasket performance depends heavily on material compatibility with temperature, pressure, and chemical media.

For example, PTFE gaskets provide excellent chemical resistance, while graphite materials are preferred for high-temperature steam systems exceeding 500°C.

（1）Common Non Metallic Gasket Materials

  • Compressed Non-Asbestos
  • PTFE
  • Graphite
  • Rubber
  • Cork
  • Mica

（2）Material Performance Comparison

Comparison of Common Non Metallic Gasket Materials
Material Temperature Resistance Typical Application
PTFE Up to 260°C Chemical processing
Graphite Up to 550°C Steam pipelines
Compressed Non-Asbestos Up to 400°C Industrial flange sealing

3. Compressed Non Asbestos Gasket for Industrial Flange Applications

Compressed non asbestos gasket for industrial flange systems has become one of the most popular sealing solutions due to increasing environmental regulations and workplace safety standards.

Traditional asbestos materials have largely been replaced by advanced non-asbestos fibers combined with elastomer binders. These modern gasket sheets provide excellent compressibility, oil resistance, and sealing reliability.

Many industrial plants report that high-quality compressed non-asbestos gaskets can improve flange sealing performance by approximately 25% compared with low-grade alternatives.

（1）Typical Industrial Uses

  1. Oil refinery piping systems
  2. Chemical processing equipment
  3. Water treatment facilities
  4. Industrial boiler flange connections

4. High Temperature Non Metallic Gasket Sheet Material and Manufacturing Solutions

High temperature non metallic gasket sheet material is widely used in thermal processing industries where equipment operates continuously under elevated temperatures.

Choosing a reliable custom non metallic gasket manufacturer for sealing solutions is important because manufacturing precision directly affects sealing performance and product lifespan.

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.

Rilson manufactures Nonmetallic gaskets that meet ASME, JIS, BS, DIN & other international standards, offering a wide range of sealing solutions that are specifically designed to meet the needs of various industries.

Our nonmetallic gaskets provide chemical resistance, high-temperature capability, and exceptional sealing performance for industrial applications.

（1）Key Manufacturing Advantages

  • Compliance with ASME, DIN, BS, and JIS standards
  • Advanced gasket cutting and inspection equipment
  • Customized sealing solutions for various industries
  • Stable product quality and global export capability

5. Frequently Asked Questions (FAQ)

Q1: What are non metallic gaskets mainly used for?
They are mainly used for flange sealing in chemical, oil, water treatment, and industrial processing systems.

Q2: Which non metallic gasket material is best for high temperature applications?
Graphite and mica-based gasket materials are commonly used for high-temperature environments.

Q3: Why are compressed non-asbestos gaskets widely used today?
They provide safe, environmentally friendly sealing performance while replacing traditional asbestos materials.

Q4: How can I choose the correct non metallic gasket material?
Material selection should consider temperature, pressure, chemical compatibility, and flange surface conditions.