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High-Performance Ring Gaskets for RTJ Flange Sealing Applications
A ring gasket, also known as an RTJ gasket (Ring Type Joint gasket) or ring joint gasket, is a precision-machined metallic sealing component designed for high-pressure and high-temperature flange connections in critical industrial piping systems. Installed within specially machined flange grooves, the ring type joint gasket compresses under bolt load to form a secure metal-to-metal seal, ensuring reliable, leak-proof performance even in extreme operating conditions.
Asian Sealing Products is a leading ring gasket manufacturer, delivering high-performance RTJ gaskets engineered for demanding industrial applications such as oil & gas, petrochemical processing, refineries, power generation, and offshore operations. Our ring joint gaskets are built to maintain sealing integrity where safety, pressure resistance, and durability are essential.
Our RTJ gaskets are manufactured using premium materials, including soft iron, carbon steel, stainless steel, and corrosion-resistant alloys. Each ring gasket is designed to provide excellent mechanical strength, resistance to deformation, and long service life under high-pressure and temperature variations.
We offer a complete range of RTJ gasket profiles, including Type R (oval and octagonal), RX, and BX, suitable for a wide range of pressure classes and flange systems. All our ring gaskets are produced in accordance with international standards such as ASME B16.20, API 6A, DIN, and BS, ensuring precise dimensions, consistent sealing performance, and dependable operation in critical environments.
Industry standards
API, DIN, ASME B16.20, UNS
Usage of industries
Oil and Gas
Chemical Industry
Power Generation
Marine
Mining
Ring Gasket (RTJ Gasket)
High-Performance Ring Gaskets for RTJ Flange Sealing Applications
A ring gasket, also known as an RTJ gasket (Ring Type Joint gasket) or ring joint gasket, is a precision-machined metallic sealing component designed for high-pressure and high-temperature flange connections in critical industrial piping systems. Installed within specially machined flange grooves, the ring type joint gasket compresses under bolt load to form a secure metal-to-metal seal, ensuring reliable, leak-proof performance even in extreme operating conditions.
Asian Sealing Products is a leading ring gasket manufacturer, delivering high-performance RTJ gaskets engineered for demanding industrial applications such as oil & gas, petrochemical processing, refineries, power generation, and offshore operations. Our ring joint gaskets are built to maintain sealing integrity where safety, pressure resistance, and durability are essential.
Our RTJ gaskets are manufactured using premium materials, including soft iron, carbon steel, stainless steel, and corrosion-resistant alloys. Each ring gasket is designed to provide excellent mechanical strength, resistance to deformation, and long service life under high-pressure and temperature variations.
We offer a complete range of RTJ gasket profiles, including Type R (oval and octagonal), RX, and BX, suitable for a wide range of pressure classes and flange systems. All our ring gaskets are produced in accordance with international standards such as ASME B16.20, API 6A, DIN, and BS, ensuring precise dimensions, consistent sealing performance, and dependable operation in critical environments.
Industry standards
API, DIN, ASME B16.20, UNS
Usage of industries
Oil and Gas
Chemical Industry
Power Generation
Marine
Mining
Request A Quote
By submitting this form, you agree to the privacy policy and terms of use.
Ring Gasket Types
Our commitment to sealing performance is reflected in our comprehensive range of ring gasket solutions, including precision-engineered RTJ gaskets designed to meet the most demanding industrial requirements. We manufacture a wide variety of ring joint gasket profiles, including the widely used Type R (oval and octagonal), the pressure-energized Type RX, and the ultra-high-pressure Type BX, specifically developed for critical 6BX RTJ flange systems. Each RTJ gasket is designed for specific pressure classes and applications, ensuring optimal sealing efficiency, dimensional accuracy, and reliable performance in high-pressure and high-temperature environments.
Our commitment to sealing performance is reflected in our comprehensive range of ring gasket solutions, including precision-engineered RTJ gaskets designed to meet the most demanding industrial requirements. We manufacture a wide variety of ring joint gasket profiles, including the widely used Type R (oval and octagonal), the pressure-energized Type RX, and the ultra-high-pressure Type BX, specifically developed for critical 6BX RTJ flange systems. Each RTJ gasket is designed for specific pressure classes and applications, ensuring optimal sealing efficiency, dimensional accuracy, and reliable performance in high-pressure and high-temperature environments.
Ring Gasket - Octagonal
Ring Gasket - Oval
BX Type Ring
Gaskets
SBX Type Ring
Gaskets
RX Types Ring
Gaskets
Zinc Coated Ring Gasket
Seat Rings
Silver Coated Gasket
Lip Seal
Bonnet Gasket
Ring Gasket with
PTFE Inserted
Bridgeman
Gaskets
R Type Kammprofile
Gaskets - Adapter
Ring Type Blind
Gaskets
R Type Kammprofile
Gaskets - Octagonal
Your Trusted Partner for Reliable Sealing Solutions
Reliability
Our gaskets are engineered for long-term reliability, reducing the risk of leaks and ensuring the integrity of your systems.
Durability
Built to last, our ring gaskets resist wear and tear, maintaining their sealing performance even in challenging environments.
Temperature Resistance
Whether facing extreme heat or cold, our gaskets maintain their sealing properties, providing consistent performance in diverse temperature ranges.
Chemical Compatibility
Choose from various materials to ensure compatibility with the fluids and chemicals in your applications.
Custom Solutions
Need a unique size or material? Our team can work with you to create customized ring gasket solutions tailored to your specifications.
Ring Gasket Applications
RTJ gaskets are widely used in industries where reliable, high-pressure sealing is critical. Designed for demanding operating conditions, these ring joint gaskets provide secure, leak-proof performance across a wide range of industrial applications. The versatility of ring gaskets makes them suitable for use across multiple sectors that require durable, high-integrity sealing solutions. Below are the key industries where RTJ gaskets are commonly applied:
RTJ gaskets are widely used in industries where reliable, high-pressure sealing is critical. Designed for demanding operating conditions, these ring joint gaskets provide secure, leak-proof performance across a wide range of industrial applications. The versatility of ring gaskets makes them suitable for use across multiple sectors that require durable, high-integrity sealing solutions. Below are the key industries where RTJ gaskets are commonly applied:
Oil and Gas
- Pipeline connections
- Flange joints in oil refineries
Chemical Processing
- Sealing joints in chemical reactors
- Flange connections in chemical plants
Power Generation
- Boiler systems
- Flange joints in oil refineries
Petrochemical
- Connecting pipes in petrochemical plants
- Sealing joints in storage tanks
Manufacturing
- Machinery flange connections
- Hydraulic systems
Pharmaceutical
- Pharmaceutical manufacturing equipment
- Sealing joints in cleanroom environments
Mining
- Slurry pump connections
- Flange joints in mining equipment
Marine
- Pipeline connShip engine components
- Sealing joints in marine pipelines
Ring Gasket Materials
Ring joint gaskets are manufactured using a range of materials selected based on specific application requirements. The choice of material plays a critical role in ensuring the performance, durability, and sealing integrity of each ring gasket in high-pressure and high-temperature environments. Material selection for RTJ gaskets depends on several key factors, including the type of media being sealed, operating temperature and pressure conditions, and exposure to corrosive or harsh environments. Choosing the right material ensures optimal resistance to deformation, chemical compatibility, and long-term reliability. Common materials used in the manufacturing of RTJ gaskets include soft iron, carbon steel, stainless steel, and various corrosion-resistant alloys, each offering unique advantages for different industrial applications. Below are the most widely used materials:
Ring gaskets are manufactured using various materials based on the application’s requirements. The material selection depends on factors such as the type of fluids being sealed, operating conditions (including temperature and pressure), and the overall environment. Here are some common materials used for manufacturing ring gaskets:
Soft Iron
Soft Iron (Fe)- Ideal for low-pressure environments and non-corrosive media.
Stainless Steel
Stainless Steel (SS 304, SS 316, SS 321)- Offers excellent corrosion resistance, making it suitable for a wide range of applications, including those with high temperatures and aggressive chemicals.
High Alloy
Provides exceptional resistance to extreme temperatures, pressure differentials, and corrosive environments
Monel
Provides exceptional resistance to extreme temperatures, pressure differentials, and corrosive environments
Duplex and Super Duplex
Well-suited for applications requiring high strength, corrosion resistance, and resistance to pitting and crevice corrosion.
Product Details
Ring Type Joint Gaskets – Oval & Octagonal Profiles
Oval and octagonal cross-section Ring Type Joint (RTJ) gaskets are widely used in applications with operating pressures of up to 10,000 psi, providing reliable metal-to-metal sealing for critical flange connections.
All dimensions and groove tolerances for oval and octagonal RTJ gaskets are manufactured in strict accordance with API 6A and ASME B16.20 standards, ensuring accurate flange compatibility and consistent performance.
We maintain a comprehensive inventory of RTJ gaskets in a wide range of sizes and material grades, available for immediate dispatch from Ring Numbers R11 through R105.
Ring Joint Gaskets BX and SBX Type
BX-type Ring Type Joint (RTJ) gaskets are specifically engineered for very high-pressure applications, where reliable sealing under extreme operating conditions is critical. Each BX gasket incorporates a pressure balance hole designed to equalize any pressure that may become trapped within the flange grooves, thereby enhancing sealing stability and safety.
BX-type gaskets are exclusively compatible with API BX flanges and grooves and are available in standard sizes ranging from BX150 to BX303, in accordance with applicable API specifications.
SBX-type RTJ gaskets are manufactured in compliance with the API 17D standard for subsea and critical offshore applications. While the dimensions and tolerances of SBX gaskets follow API 6A requirements, they include an additional pressure passage hole, provided in two configuration options as specified under API 17D, depending on the installation and service requirements.
To meet stringent subsea performance and durability criteria, SBX-type gaskets are manufactured exclusively from non-corrosive materials, as mandated by API 17D, ensuring long-term reliability in aggressive offshore environments.
Ring Joint Gaskets RX Type
RX-type Ring Type Joint (RTJ) gaskets are an enhanced adaptation of the standard Type R gasket, engineered to deliver improved sealing performance under higher internal pressures. While maintaining the same groove design as Type R gaskets, RX gaskets are fully interchangeable with standard R-type gaskets.
The RX profile is designed to become pressure-energized during operation, allowing the gasket to deform more effectively under increasing system pressure and achieve superior metal-to-metal sealing.
RX-type RTJ gaskets are available in standard sizes ranging from RX20 to RX215, in accordance with applicable API and ASME specifications.
Combination (Transition) Ring Gaskets
Combination rings, also known as transition ring gaskets, are specially designed to connect two flanges of different nominal sizes while maintaining the same pitch circle diameter, allowing proper bolt alignment and secure assembly.
These ring gaskets enable safe and reliable sealing between mismatched flange sizes, making them ideal for retrofit applications, system modifications, or temporary connections where standard flange matching is not possible. Transition rings provide an effective solution without compromising sealing integrity or joint performance in high-pressure service conditions.
Ring Type Joint Gaskets – SRX Type
SRX-type Ring Type Joint (RTJ) gaskets are similar in design and sealing performance to RX-type gaskets, but incorporate a special vent hole to allow trapped water to escape during installation and operation in subsea applications.
This venting feature helps prevent pressure buildup caused by trapped fluids, improving sealing reliability and reducing the risk of gasket or flange damage in underwater and offshore service conditions.
Ring Type Blind Gaskets
Blind Ring Type Joint (RTJ) gaskets are manufactured with a solid profile to fully isolate or blank off pipelines and pressure vessels during maintenance, testing, or shutdown operations. These gaskets provide secure sealing in high-pressure flange connections where flow isolation is required.
Rubber-coated RTJ gaskets, typically manufactured from steel with an elastomer coating, are commonly used during hydrostatic and pressure testing to minimize damage to flange grooves and sealing surfaces. The rubber coating creates additional sealing contact points while protecting the flange faces from metal-to-metal abrasion, ensuring safe testing without compromising flange integrity.
Ring Joint Gaskets – Kammprofile (Octagonal)
Kammprofile Octagonal (Kammpro-OCT) Ring Type Joint (RTJ) gaskets are manufactured to standard octagonal dimensions in accordance with API 6A and ASME B16.20.
The Kammprofile design incorporates precision-engineered grooves on the gasket surface, which are then faced with oxidation-inhibited flexible graphite to enhance sealing performance. This design is particularly effective in applications where flange groove cracking or embrittlement has been observed, providing a reliable seal while accommodating flange surface imperfections.
Kammpro-OCT gaskets combine the metal-to-metal sealing strength of RTJ gaskets with the flexibility and chemical resistance of graphite facings, making them ideal for high-pressure, high-temperature, and aggressive chemical environments.
Ring Type Joint Gaskets – Pressure-Energized (PEG)
Pressure-Energized Gaskets (PEG) with Kammprofiled surfaces are ideal for high-pressure reactors, often used at the top and bottom flanges of hydroprocessing equipment.
The serrated surfaces, faced with oxidation-inhibited flexible graphite, allow the graphite to flow into minor imperfections under compression, ensuring enhanced seal tightness and reliable performance in extreme conditions.
Ring Type Joint Gaskets – Kammprofile Adapter Gaskets
Kammprofile Adapter Gaskets enable RTJ flanges to mate with raised-face flanges, combining the strength of full-metal construction with Kammprofiled sealing surfaces laminated with flexible graphite.
With the groove pitch properly positioned under the raised face, this design provides one of the most robust and reliable adapter-style seals for high-pressure applications.
Bridgeman Gaskets
Bridgeman gaskets are pressure-activated gaskets commonly used on pressure vessel heads and valve bonnets for pressures of 1500 psi and above.
The gasket’s cross-section is designed so that internal pressure converts axial force into radial sealing force, creating a self-energized metal-to-metal seal.
To enhance performance, Bridgeman gaskets are often silver-plated or lead-plated, providing a softer surface that facilitates metal flow into the flange, reducing the force required for effective sealing.
Delta Gaskets
Delta gaskets are pressure-actuated gaskets designed for high-pressure applications, typically on pressure vessels and valve bonnets operating above 5000 psi.
Under internal pressure, the gasket material expands to maintain a tight seal, counteracting the forces that tend to separate the flanges.
As with lens gaskets, complete drawings and material specifications are required, and the flange surface must be finished to 63 microinches or smoother to ensure reliable sealing performance.
Lens Ring Gaskets
Lens ring gaskets are line-contact seals used in high-pressure piping systems and pressure vessel heads.
With a spherical cross-section, these gaskets require precisely machined flanges. Their small contact area allows seating with minimal bolt load, while generating high gasket pressure for effective sealing.
Gasket materials are typically softer than the flange, and complete drawings and material specifications must be provided when ordering to ensure proper fit and performance.
RTJ Kammprofile Gaskets
RTJ Kammprofile gaskets are composite gaskets featuring a serrated metal core with a soft facing material. The metal core is machined with concentric serrations on each contact face, creating high-pressure points that allow the soft facing to flow into flange imperfections, even at relatively low bolt loads.
The soft facing material, commonly expanded graphite, compresses into the serrations, forming a thin, uniform film across the peaks to achieve optimal sealing density within the groove.
This design combines the conformability of soft materials with the strength and reliability of metallic gaskets. Alternative facings such as PTFE (for chemically aggressive services) or mica (for high-temperature applications) can also be used, depending on the operating conditions.
Specifications
- Our ring gaskets conform to international standards:API 6AASME B16.20ASME B16.5DIN & Custom Standards
- Pressure classes supported:2000 PSI3000 PSI5000 PSI10,000 PSI15,000 PSI
Why Choose Asian Sealing Products for Ring Gaskets?
- Precision Manufacturing: CNC‑machined ring gaskets with tight dimensional tolerances ensure perfect flange fit and long‑term sealing.
- Global Quality Compliance: All products are manufactured under strict quality control systems and tested for dimensional accuracy and surface finish.
- Customization Capability: We offer custom sizes, materials, and coatings based on client drawings and operating conditions.
- Competitive Pricing: Direct manufacturing allows us to provide premium quality ring gaskets at competitive prices.
- Reliable Supply & Export Ready: We supply ring gaskets to domestic and international clients with reliable lead times.
Specifications
Ring Gasket Material Properties — Temperature Resistance
| Material | Max Operating Temp (°C) | Min Operating Temp (°C) | Corrosion Resistance | Remarks |
|---|---|---|---|---|
| Soft Iron | ~540 | -40 | Poor | For non-corrosive, low-pressure, and steam applications |
| Stainless Steel 304 | ~870 | -196 | Good (general-purpose) | Used in oxidizing environments; not ideal for chlorides |
| Stainless Steel 316 | ~925 | -196 | Very Good (chloride-resistant) | Preferred for marine and chemical applications |
| Inconel 625 (High-Alloy) | ~1090 | -196 | Excellent (oxidation, acids) | Resistant to extreme temp, pressure, and aggressive chemicals |
| Monel 400 | ~480 | -100 | Excellent (seawater, acids) | Great for marine and HF acid environments |
| Duplex SS (e.g., 2205) | ~600 | -50 | Excellent (chloride & stress cracking) | High strength and corrosion resistance; often used in offshore systems |
| Super Duplex (e.g., 2507) | ~600 | -50 | Superior (acid, pitting, chloride) | Enhanced mechanical and corrosion resistance over standard duplex alloys |
Ring Gasket Material Specification Table
| Gasket Material | Brinell Hardness (Max) | Rockwell Hardness (Max) | Identification |
|---|---|---|---|
| Soft Iron | 90 | 56 | D |
| Low Carbon Steel | 120 | 68 | S |
| 4–6% Chrome, 0.5% Molybdenum (F5) | 130 | 72 | F5 |
| 304 Stainless Steel | 160 | 83 | S304 |
| 316 Stainless Steel | 160 | 83 | S316 |
| 347 Stainless Steel | 160 | 83 | S347 |
| Inconel 625 | 200 – 240 | 96 – 100 (C-scale) | INC625 |
| Monel 400 | 130 – 200 | 75 – 95 | MON400 |
| Duplex Stainless Steel (2205) | 160 – 230 | 84 – 90 | DSS2205 |
| Super Duplex Stainless Steel (2507) | 170 – 250 | 90 – 95 | SDSS2507 |
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Answers to all your possible questions.
How do I install an RTJ (Ring Joint) gasket?
Clean flange grooves and the gasket thoroughly. Inspect for burrs or pits. Center the ring in the groove, align flanges vertically, and tighten bolts in a star pattern to ensure even compression.
What are Ring Gaskets (RTJ gaskets) and how do they work?
Ring gaskets also known as RTJ (Ring Type Joint) gaskets, are solid metal sealing rings used in high-pressure and high-temperature applications. They are specifically designed to fit into the ring groove of RTJ flanges. When the flange bolts are tightened, the RTJ gasket is compressed into the groove, creating a metal-to-metal seal. This tight seal prevents leakage even under extreme pressure and temperature conditions, making RTJ gaskets ideal for oil & gas, petrochemical, power generation, and offshore applications.
How do I select the right RTJ gasket for my application?
Choosing the correct Ring gasket (RTJ ) depends on your flange type, pressure class, and operating conditions. Our experts recommend reviewing flange dimensions, material compatibility, and temperature/pressure requirements to ensure optimal performance and safety.
How do I troubleshoot leakage issues with Ring gaskets?
Leakage can result from misalignment, flange surface imperfections, or incorrect torque. Check for proper installation, flange surface condition, and ensure the gasket material is suitable for the operating environment. Our technical team can assist with advanced troubleshooting.
How often should RTJ gaskets be replaced?
The lifespan of RTJ gaskets depends on various factors, such as operating conditions, maintenance practices, and gasket material. Regular inspections of the gaskets should be performed, and they should be replaced if signs of wear, degradation, or loss of sealing effectiveness are observed.
What pressure classes and flange standards are compatible with RTJ gaskets?
RTJ (Ring Type Joint) gaskets are designed for high-pressure and high-temperature applications and are commonly used with ASME/ANSI B16.5 and API 6A flanges. They are compatible with pressure classes ranging from Class 150 up to Class 2500, depending on the gasket type and material.
Which countries does the Asian sealing products supplier provide ring gaskets to?
The Asian sealing products supplier distributes ring gaskets (RTJ gasket) to various countries and global regions such as ring gasket USA, ring gasket UK, ring gasket in Australia, ring gasket the Middle East, Europe, South America, Africa, and Southeast Asia. Their distribution network covers a wide geographical area to cater to customers worldwide.
What sets Asian Sealing Products apart as the leading supplier of Ring joint gaskets?
Asian Sealing Products stands out for its precision-engineered RTJ gaskets, certified to ASME and API standards, with a wide range of materials and sizes. Backed by fast delivery, global reach, and expert engineering support, it’s a trusted partner for high-performance sealing solutions.
Can I get a custom gasket made for my specific machinery needs?
We offer custom RTJ gaskets tailored to your machinery’s requirements, including unique dimensions, materials, and special pressure or temperature tolerances.
How quickly can I expect my gasket order to be delivered?
Asian Sealing Products prioritize quick turnaround times without compromising quality, helping you minimize operational downtime. Delivery schedules are aligned with project urgency and production scale.
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