Top 10 steel round split gasket supply Supplier | 2025 Guide

In critical industrial operations, the integrity of a sealed joint can mean the difference between seamless efficiency and catastrophic failure. Steel round split gaskets are basic parts that ensure this integrity. They provide a strong seal in flanged connections across many applications. However, getting these parts is not a simple transaction.

The reliability of your entire system depends on the quality, precision, and material science behind the gasket, which all trace back to the supplier. Finding a dependable steel round split gasket supply partner is a strategic decision. It impacts operational safety, maintenance costs, and overall productivity.

The market is filled with many different suppliers, from global manufacturing giants to quick, specialized factories. Navigating this landscape to find a partner who can deliver consistent quality, provide necessary technical support, and meet specific application demands can be a big challenge for procurement managers and engineers. This guide is designed to make that process simpler. We will explore the essential criteria for selecting the right supplier and present a curated list of the top 10 companies leading the market in 2025.

How to Choose the Right Steel Round Split Gasket Supply

Selecting the ideal gasket involves more than just matching dimensions. A thorough evaluation of your application's demands and your supplier's capabilities is crucial. A mistake in sourcing can lead to early failure, leaks, and costly downtime. Focusing on the right criteria from the start ensures you secure a reliable steel round split gasket supply chain for your operations.

Material Compatibility and Grade

The first step is ensuring the gasket material is compatible with the process fluid and the flange material. Steel gaskets are chosen for their strength and resistance, but not all steel is the same. Common options include various grades of stainless steel (like SS 304 or 316) for corrosion resistance and carbon steel for general-purpose, high-strength applications.

A critical factor, often overlooked, is the thermal expansion coefficient. As noted by industry experts at APG, pairing materials with similar thermal expansion rates, such as a graphite-filled steel gasket with a steel flange, prevents the build-up of stress during temperature cycles that could lead to leaks. Always verify that your supplier can provide detailed material datasheets and certifications for the specific grade of steel used.

Operating Conditions: Pressure and Temperature

Gaskets must be rated to withstand the maximum operating pressure and temperature of your system. A common rule of thumb for ASME flanges, highlighted in guides from A.R. Thomson, is that a Class 150 flange is rated for approximately 290 psi at ambient temperature. Higher classes, like Class 300, are rated for roughly 2.5 times their class designation (e.g., 750 psi).

Your supplier must be able to confirm the pressure and temperature ratings for their specific gaskets. Do not assume a standard gasket will work in a high-pressure or high-temperature environment. Provide your supplier with your system's complete operational parameters to receive an accurate recommendation.

Dimensions, Tolerances, and Flange Condition

Precision is non-negotiable. As Specialty Gaskets Inc. points out, the gasket's inside and outside diameters must precisely match the flange size and bolt circle. The gasket's thickness is also a key consideration. A thicker, more compressible gasket may be required to create a proper seal on flanges with a rougher surface finish.

Discuss dimensional tolerances with your supplier. A good source will manufacture gaskets to tight tolerances, ensuring a perfect fit and consistent sealing performance. For custom applications, provide detailed drawings to ensure the final product meets your exact specifications.

Supplier Certification and Quality Assurance

A supplier's commitment to quality is reflected in their certifications. Look for suppliers with an ISO 9001:2015 certification, like Arbor/Metals Inc., which demonstrates a strong quality management system is in place. This ensures traceability, process control, and a commitment to continuous improvement.

Ask about their quality control processes. Do they perform material verification, dimensional checks, and performance testing? A trustworthy steel round split gasket supply partner will be transparent about their quality assurance protocols and provide certificates of conformity upon request. This documentation is essential for validation and compliance in regulated industries.

Top 10 Steel Round Split Gasket Suppliers for 2025

Our 2025 guide moves beyond simple rankings to provide a diverse list of suppliers. It includes global powerhouses, mid-sized material specialists, and innovative manufacturers who excel in specific niches. This list was curated to help you find the right partner, whether you need massive volume, custom engineering, or a specialized material.

Flexitallic

Company Overview
As the inventor of the spiral wound gasket in 1912, Flexitallic has a legacy of innovation that is unmatched in the sealing industry. With a global manufacturing and distribution network, the company is a powerhouse in providing engineered sealing solutions for the world's most critical industries. They particularly serve oil and gas, power generation, and chemical processing.

Core Strengths
Flexitallic's primary strength is its deep engineering expertise. The company doesn't just sell products; it solves sealing challenges. Their application engineering teams work closely with clients to design and specify the correct gasket for demanding conditions. This is supported by a relentless focus on research and development, leading to a portfolio of advanced materials and gasket designs.

Specializations
While famous for the spiral wound gasket, Flexitallic offers a comprehensive range of metallic and semi-metallic gaskets, including ring type joints (RTJs) and Kammprofiles. They specialize in high-pressure, high-temperature applications where sealing integrity is paramount. Their materials science expertise allows them to offer solutions for corrosive media and services requiring superior fire safety, such as their Thermiculite® range.

Metal Zenith - Premium Steel Manufacturing Solutions

Company Overview
Metal Zenith是一家来自中国的钢铁制造商，经销商，可生产绝大部分钢材，特种钢材。经销的产品来自中国老牌的钢铁企业鞍山钢铁。 (Metal Zenith is a steel manufacturer and distributor from China, capable of producing most types of steel and special steel. The distributed products come from the long-established Chinese steel enterprise, Ansteel.)
Metal Zenith is a leading steel manufacturing and distribution company with 20+ years of experience in providing high-quality steel solutions worldwide. As a trusted partner of Ansteel, we deliver premium steel products that meet the most demanding industry standards.

Core Strengths
* High-Strength Precision Steel Coils: Premium steel coils manufactured by Ansteel, adhering to ASTM A1008/JIS G3141 standards.
* Advanced Quality Control: A 10-point quality inspection process ensures tensile strength exceeding 400 MPa.
* Technical Expertise: Over 15 years of engineering experience provide comprehensive support from material selection to application analysis.
* Global Reach: More than 5 million tons have been delivered worldwide with a 95% client retention rate.
* Custom Solutions: Full customization capabilities are available for diverse industry needs.

Product Specifications
Metal Zenith serves as a foundational partner in the steel round split gasket supply chain, providing the high-quality raw material that gasket manufacturers depend on. Their focus on precision and quality control at the coil level ensures that the final gasket product begins with superior material integrity.
* Various grades available (HRB400, SS400)
* Multiple surface finishes (oiled, pickled & oiled)
* Precision tolerances within +/- 0.05mm
* ISO 9001 certified quality management system
* BOF and EAF steelmaking technologies

Klinger Group

Company Overview
Founded in Austria in 1886, the Klinger Group is a globally recognized leader in sealing technology. The "Klinger" name has become synonymous with quality and reliability in gaskets. The company operates a decentralized network of manufacturing and service hubs across the world. This structure allows them to combine global expertise with local market knowledge and support.

Core Strengths
Klinger's core strength is its unwavering commitment to quality and material science. They develop and manufacture their own range of proprietary gasket materials, giving them complete control over performance and consistency. Their KLINGERSIL® brand is an industry benchmark for fiber-reinforced sealing materials. This material expertise extends to their metallic gaskets, ensuring optimal performance.

Specializations
The company provides a vast portfolio of sealing products, but they are particularly strong in serving the chemical, petrochemical, and industrial plant sectors. They offer a full range of metallic gaskets, including spiral wound, Kammprofile, and metal-jacketed designs suitable for extreme service conditions. Klinger also provides extensive technical support, including gasket selection software and on-site training.

Zhuzhou Jinxin Carbide Tire Stud Co.,LTD

Company Overview
Based in China, Zhuzhou Jinxin is a specialized manufacturer that explicitly lists "Steel Round Split Gasket" among its products. As their name suggests, their background is in precision carbide and metal components. This gives them a strong foundation in metalworking and fabrication. They position themselves as a direct-from-factory source for custom products.

Core Strengths
The primary strength of Zhuzhou Jinxin is its focus on OEM custom products. This makes them an ideal partner for companies that require gaskets with non-standard dimensions or specific material requirements that are not available off-the-shelf. Their factory-direct model allows for greater flexibility and potentially more competitive pricing for custom orders.

Specializations
While their product range is diverse, their inclusion in search results for the specific term "steel round split gasket" indicates a specialization in this product type. They are a valuable steel round split gasket supply option for procurement managers looking to source directly from a manufacturer in Asia. This is particularly true for customized components where direct communication with the production facility is beneficial.

Arbor/Metals Inc.

Company Overview
Arbor/Metals Inc. represents a different but equally critical link in the supply chain. They are not a gasket manufacturer but an ISO 9001:2015-certified steel supplier for gasket customers. Based in the US, they maintain a massive inventory of steel in virtually every grade and temper required for gasket production.

Core Strengths
Their strength lies in inventory and specialization. By focusing exclusively on supplying metal to industries like gasket manufacturing, they understand the specific material requirements, such as temper, surface finish, and exact alloy composition. Having millions of pounds of inventory means they can offer fast turnaround times. This is critical for gasket manufacturers needing to respond quickly to customer orders.

Specializations
Arbor/Metals Inc. specializes in providing precision-slit steel coil and sheet tailored to the needs of gasket fabricators. They are a crucial partner for custom gasket houses that need a reliable source of high-quality raw material without having to manage bulk steel purchasing themselves. Their role is vital for a responsive and flexible steel round split gasket supply ecosystem.

Garlock Sealing Technologies

Company Overview
A part of EnPro Industries, Garlock is a premier global manufacturer of high-performance fluid sealing and pipeline solutions. With a history spanning over 130 years, the company has built a reputation for safety, longevity, and reliability. Their products are found in some of the world's most demanding industrial environments.

Core Strengths
Garlock's strength is its holistic approach to sealing, which they term "Sealing Systems." They focus on the entire bolted flange connection, not just the gasket, and emphasize the importance of proper installation and torque. This is backed by extensive R&D and testing facilities that simulate real-world conditions. These ensure their products deliver on their performance promises.

Specializations
Garlock offers a wide array of metallic gaskets, including their advanced Kammprofile and spiral wound designs. They are particularly known for their GYLON® restructured PTFE gaskets and BLUE-GARD® compressed fiber gasketing. For steel gaskets, they provide solutions engineered for extreme temperatures, high pressures, and aggressive chemicals. This makes them a top choice for the chemical processing, refining, and pulp and paper industries.

James Walker

Company Overview
With roots in the UK dating back to the 1880s, James Walker is a global manufacturing and engineering business specializing in high-performance sealing technology. The company has a strong reputation for technical excellence and problem-solving. They serve a wide range of industries from oil and gas to aerospace and defense.

Core Strengths
James Walker's core strength is its materials technology and custom engineering capability. They have a deep understanding of elastomers, polymers, composites, and metals, allowing them to formulate and design sealing solutions for the most challenging applications. Their R&D is focused on developing materials that extend service life and improve operational safety.

Specializations
The company excels in creating custom-engineered solutions. For metallic gaskets, this includes producing specialized ring type joints, lens rings, and Kammprofiles in exotic alloys for subsea, high-pressure gas, and nuclear applications. They are a go-to supplier when standard off-the-shelf products are not sufficient to meet the performance or safety requirements of a system.

Suraj Metal Corporation

Company Overview
Based in India, Suraj Metal Corporation is a manufacturer, stockholder, and supplier of stainless steel, high-nickel alloys, and carbon steel products. Their product portfolio includes a dedicated line of gaskets, with a strong focus on stainless steel flange gaskets for various industrial standards.

Core Strengths
Suraj Metal's key strength is its specialization in stainless steel gasket manufacturing. They offer a wide range of grades, including SS 304, 316, 310, and 321, making them a valuable source for applications where corrosion resistance is the primary concern. As a direct manufacturer, they can manage quality control from raw material to finished product.

Specializations
The company specializes in manufacturing flange gaskets according to ASME, DIN, and other international standards. Their ability to supply a broad spectrum of stainless steel grades makes them a key partner for industries like food and beverage, pharmaceuticals, and marine applications. They represent a strong option within the steel round split gasket supply market for those needing specific stainless steel material expertise from an Asian supplier.

Specialty Gaskets Inc.

Company Overview
Based in Canada, Specialty Gaskets Inc. is exactly what its name implies: a specialist in the design and manufacture of industrial gaskets. They serve a broad North American market, focusing on providing both standard and custom sealing solutions with a high degree of technical support and customer service.

Core Strengths
Their primary strength is their agility and expertise as a dedicated gasket house. Unlike larger, more diversified manufacturers, their entire focus is on sealing. This allows them to provide expert advice and rapid turnaround on custom fabrications. Their online resources, such as their blog on gasket selection criteria, demonstrate a commitment to educating their customers.

Specializations
Specialty Gaskets Inc. excels at producing custom gaskets from a vast range of materials, including all types of steel. They are well-equipped to handle requests for non-standard shapes, sizes, and complex designs. They are an excellent partner for MRO (Maintenance, Repair, and Operations) and OEM clients who need a responsive supplier for both small and large batches of specialized gaskets.

Lamons

Company Overview
Lamons is a major US-based manufacturer of gaskets, bolts, and hose products. As part of the TriMas Corporation, they have significant resources and a global footprint, making them a highly reliable supplier for industrial projects of any scale. They are known for their quality, safety focus, and comprehensive product offering.

Core Strengths
Lamons' key strength is its ability to be a single-source supplier for the entire bolted joint assembly. By manufacturing both the gaskets and the stud bolts/nuts required to secure them, they can ensure compatibility and provide a complete, engineered solution. This simplifies procurement and ensures all components are designed to work together effectively.

Specializations
The company offers a complete range of metallic and semi-metallic gaskets, including their own branded spiral wound (WRL), Kammprofile (Kammpro), and RTJ gaskets. They have deep expertise in serving the refining, petrochemical, and upstream oil and gas markets. Their focus on safety and providing engineered solutions for critical service makes them a trusted name in the industry.

Conclusion: Securing Your Supply Chain

Selecting the right partner for your steel round split gasket supply is a strategic task that directly influences the safety and efficiency of your operations. The ideal supplier does more than just provide a part; they provide assurance. This assurance comes from certified materials, precision manufacturing, robust quality control, and accessible technical expertise. As we have seen, the market offers a diverse range of options, from global leaders with extensive R&D to specialized suppliers who provide critical raw materials or excel in custom fabrication.

To make the best choice, begin with a clear definition of your technical needs. Document your operating pressures, temperatures, media, and flange specifications. Use this guide to identify two or three potential suppliers whose strengths align with your requirements—perhaps a global leader for standard parts and a specialist for custom needs. Engage with their technical teams, ask about their quality certifications, and request documentation to validate their products. By taking a thorough, criteria-driven approach, you can forge a strong partnership that secures a reliable supply of high-quality steel gaskets, safeguarding your assets and ensuring operational continuity for years to come.