Ring Joint Gasket

Short delivery time, good quality, and the best after-sale service—these are the reasons you can cooperate with us for the ring joint gaskets. The ring joint gaskets play important roles in the oil & gas industry. In the text below, we can know more about the gaskets, and if you need more information not listed, please contact us.

Table of Contents

Welcome to Know Ring Joint Gasket

The ring joint gasket is manufactured from metal materials in compliance with ASME B 16.20 and the API specification. This type of gasket has two basic types: oval and octagonal, including R, RX, BX, SBX, SRX, IX Norsok type.

Ring joint gasket is used in connection with an RTJ flange, as it can generate a strong seal between two mating flanges. When the flanges are fixed by bolts, ring joint gasket is squeezed into the groove of the flange, forming a tight seal between the mating flanges. In order to avoid destruction of the flanges, the material of the ring joint gasket must be softer than the material of the flanges.

Types of Ring Joint Gasket

It has many types, like R-type oval and octagonal, RX, BX, SBX, SRX, and IX Norsok. In the text below, we will know the details.

R Type Octagonal Ring Gasket

The R-type octagonal ring gasket has the octagonal-shaped section. The average diameter of the R octagonal gasket is slightly larger than the average diameter of the gasket groove. The angle between the ring gasket and the bevel face of the gasket groove is around 23°, and the octagonal shape fits only the modern flat-bottom groove flange.

R Type Oval Ring Gasket

Oval ring type gaskets are manufactured in oval-shaped sections. The oval ring type joint gasket fits the round and flat bottom ring groove flange. R octagonal gaskets and R oval ring gaskets have a similar function, as they all seal through an initial line contact or an edging action as the compressive forces are applied. However, the oval ring gasket has a lower sealing efficiency than the octagonal.

BX Ring Gaskets

The style BX ring type joint is manufactured in accordance with API 6A. All BX ring type joints incorporate a pressure passage hole to allow for pressure equalization on each side of the sealing faces. On assembly, metal-to-metal contact of the flange faces is achieved.

The style BX is not interchangeable with any other style and is only suited for API 6BX flanges. Style BX ring type joints are designed to seal pressure up to 20,000 PSI (1,360 bar) in accordance with API 6A pressure ratings.

RX Ring Gasket

RX ring gasket is designed for pressures up to approx. 10,000 psi (700 bar). This is self-sealing and uses a pressure-energized effect.

The Style RX ring type joint is manufactured in accordance with API 6A and ASME B 16.20 to suit API 6B and ASME B 16.5 flanges. The Style RX is designed to fit the modem’s flat bottom groove and is interchangeable with the standard Style R ring type joint. However, since the Style RX is significantly taller than a Style R, larger flange make-up distances will result.

Style RX ring type joints are designed to seal pressures up to 6,250 PSI (425 bar) in accordance with ASME B16.5 pressure ratings and up to 5,000 PSI (340 bar) in accordance with API 6A pressure ratings.

Advantages

Suitable for extreme pressure and temperature requirements
Metal-to-metal contact creates a reliable seal
Certified quality (including surface hardness)

Recommended application

Petrochemical industry
Flange connections
Oil & gas industry
Pipe connections
Industries

Protective Coating

As the carbon steel and soft iron are easy to rust, as a result, the soft iron and low-carbon steel ring type joint gaskets are often protected with electroplated zinc to a maximum thickness of 8 μm. Alternative material coatings like PTFE are also a choice.