Sealing rings for metal pipeline flange connections are core sealing accessories extensively applied in oil and gas drilling projects, industrial pipeline systems, and offshore platform facilities. The classification, material selection and structural design of these sealing rings directly determine the overall sealing efficiency and service durability of flange connection systems. Moreover, scientific model selection, standardized installation and standardized application of sealing rings are key guarantees for the long-term stable and safe operation of the entire pipeline system.
Below is a detailed classification and feature introduction of mainstream metal flange sealing ring models for industrial pipelines:
1. R-type Sealing Ring
Compliant with the ASME B16.20 standard, R-type sealing rings fall into two structural categories: elliptical and octagonal. Among them, octagonal gaskets are the most commonly used in actual engineering scenarios.
Application Scope: Compatible with ASME series flanges and API 6A B-type flanges.
Product Features: Featuring a symmetrical octagonal cross-section structure, this gasket delivers stable and reliable sealing performance under conventional working conditions. It is a disposable sealing component and repeated use is not recommended.
2. RX-type Sealing Ring
The design and manufacturing of RX-type sealing rings follow the ASME B16.20 industry standard.
Application Scope: Specially applicable to API 6A B-type flanges.
Product Features: Different from the symmetrical structure of R-type gaskets, it adopts an asymmetric octagonal cross-section design. This unique structure can form uneven contact pressure on the flange fitting surface, realizing an excellent self-sealing function. In accordance with API 6A specifications, RX-type sealing rings are prohibited from secondary use.
3. BX-type Sealing Ring
BX-type sealing rings are manufactured in strict accordance with the API 6A standard.
Application Scope: Exclusively matching API 6A BX-type flanges, with no interchangeability with RX-type sealing rings.
Product Features: Tailored for high-standard high-performance sealing scenarios, this gasket has extremely strict requirements on the surface machining quality of flanges and itself. As specified in API 6A industry norms, secondary reuse of BX-type sealing rings is forbidden.
4. SBX-type Sealing Ring
The product standard for SBX-type sealing rings is based on API 17D.
Application Scope: Professional sealing accessories for underwater wellhead flange systems.
Product Features: It is specially developed for marine engineering extreme environments, focusing on high-reliability and high-stability sealing effects in underwater working conditions. Per API 17D regulatory requirements, this sealing ring cannot be reused after disassembly.
5. IX-type Sealing Ring
IX-type sealing rings comply with two authoritative industry standards:NORSOK L005 and ISO 27509.
Application Scope: Mainly applicable to compact-type flange assembly scenarios.
Product Features: It is a professional sealing component designed to meet the stringent sealing demands of extreme and special working conditions, and is widely used in high-precision compact pipeline systems.
There are many types of RTJ gaskets, including R Gasket,RX Gasket,BX Gasket, SBX Gasket,IX Gasket,flange connections,and various customized products.We will do more sharing about ring joint gasket.
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