One of the most popular, cost-effective, and resilient flanges available, ring-type joint gaskets are suitable for a wide range of applications and piping systems across all industries.
Ring-type gaskets are designed for use with flanges that have grooves set within them. When pressure is applied appropriately, they provide a tight seal.
It is vital that you make the correct gasket choice for your application and industry sector, and this cannot be underestimated, as in some industries, ensuring the highest seal quality can be crucial to prevent leaks from occurring.
To help, our team is on hand to provide you with the answers to all your sealing questions, offering you the most suitable product and sealing solutions for your application.
What is a ring-type joint gasket?
Ring-type joints are designed for use with grooved flanges, which need to be perfectly aligned to create a good seal.
Ring-type joints are also readily available in a wide range of sizes, profiles, and materials and are manufactured from metal, making the seal incredibly strong.
Ring-type gaskets are predominantly oval or octagonal, and the RX and BX range is available in metals such as soft iron, 316 SS, Alloy 600, 625, and 825, as well as Monel and Duplex.
As these flanges are manufactured from metal, they provide a robust seal that can withstand a high level of pressure and fluctuating temperatures.
However, it’s important to note that the gasket material should be softer than the mating surfaces, as when the gasket deforms, it then creates a metal-to-metal effective seal, with the grove machined into the flange, making it able to accept the gasket.
Ring-type joint gaskets are suitable for:
- Valves
- Pipework
- Petroleum industry
- Specialist vessel joints
- And more.
Benefits of ring-type gaskets
Stable – These seals are dependable as they have a high tolerance for variations in temperature and pressure piping systems, (this makes it essential to know the compatibility of the application in which the gasket will be placed).
Resilient – bolts are used to join the two mating faces, providing a strong seal when squeezed – an effective sealing solution.
Great for high-pressure applications – a vital component when you require a high-integrity seal.
Gaskets are available in a range of different materials (stainless steel, soft iron – metals that don’t easily corrode), making these gaskets suitable for various applications. Material choice is critical in decision-making; for example, do you need to avoid corrosion, have a sealing solution with a long shelf life, etc.?
We provide high-quality, high-value ring-type joint gaskets, all manufactured in accordance with industry standards and application requirements.
These gaskets are manufactured to fine tolerances, meeting strict quality control requirements and guidance.
However, please be aware that the grooves within the flanges can collect dirt and debris when the flange is exposed, so they must be regularly maintained.
Material Reference Chart
Three-dimension tables
| MATERIAL | IDENTIFICATION | MAXIMUM HARDNESS (BHN) |
|---|---|---|
| Soft Iron | D | 90 |
| Low Carbon Steel | S | 120 |
| F5 (4-6% Chrome – 1/2% Moly) | F5 | 130 |
| SS 304 | S304 | 160 |
| SS 316 | S316 | 160 |
| SS 321 | S321 | 160 |
| SS 347 | S347 | 160 |
| SS 410 | S410 | 170 |
| Alloy 600 | N06600 | 200 |
| Alloy 625 | N06625 | 200 |
| Alloy 800 | N08800 | 200 |
| Alloy 825 | N08825 | 200 |
| Hastelloy C-276 | N10276 | 200 |
| Duplex 31254 | S31254 | 180 |
| Duplex 31803 | S31803 | 250 |
| Monel 400 | N04400 | 200 |
| Titanium | R50400 | 215 |
You can then add the Material Reference Chart and three-dimension tables from our Ring Type Joint website page.
Types of ring-type joints
Rubber-coated gaskets – an oval ring that is encased in a nitrile coating; these types of gaskets are suitable for use in pressure testing and are often used to minimise damage to the flange. Providing an additional level of sealing, this gasket is also corrosion-resistant and available in a range of standard sizes.
Transition type joints – a great solution if the mating surfaces have varying ring groove configurations. Available with oval or octagonal faces, these gaskets fit the grooves and are bolted to the piping systems to create the seal.
Ring types with PTFE inserts – This type of seal solution helps eliminate erosion and reduce flow turbulence. The PTFE inserts fill the space between the gasket and the flange bore, creating a robust and highly effective seal.
Blind ring-type joints – suitable for pipework systems and blank flanges, these ring-type joints have solid metal centres with the solid centre designed purposefully to fit between the two flanges, with the two sealing faces sitting perfectly within the grooves.
Specialist Sealing Products can also supply a range of specialist ring-type joints suitable for specific applications.
Specialist Sealing Products
Ring-type joints are the right choice when optimal sealing is required. Efficient and allowing face-to-face contact, these seals are the best solution for high-pressure and high-temperature applications.
At SSP, we provide a range of gaskets and flanges in various shapes, sizes, and material grades, ensuring that there is a sealing solution suitable for all applications.
Check out our full range online to learn more. And if you have any specific questions, please feel free to contact us at 01535 274 776.
Put us to the test.
Email your requirements to sales@specialistsealingproducts.co.uk and see how we can help you further.
