RX Ring Joint Gasket – a pressure‑energized sealing solution engineered for high‑pressure API 6B flange connections. Featuring an octagonal cross‑section with a unique pressure‑assist design, RX gaskets deliver superior sealing reliability at pressures up to 15,000 PSI. As a leading China RX ring joint gasket manufacturer, Kaxite manufactures these gaskets to API 6A specifications, offering full interchangeability with standard R‑type oval and octagonal rings. Available in a wide range of materials – from soft iron and low carbon steel to stainless steels (304/316/347/410) and exotic alloys (Inconel, Incoloy, Monel) – our RX gaskets are trusted in oilfield drilling, production, and wellhead applications worldwide.
An RX Ring Joint Gasket is a pressure‑energized metal sealing ring designed for API 6B flanges. Similar in shape to the standard octagonal ring joint gasket, the RX gasket features a specially engineered cross‑section that takes advantage of contained fluid pressure to enhance the sealing force. As internal pressure increases, the gasket is forced more tightly into the flange groove, creating a seal that grows stronger with pressure – a critical advantage in high‑pressure oil and gas applications.
RX gaskets are fully interchangeable with standard octagonal R‑type gaskets used in API 6B flanges, making them a drop‑in upgrade for existing installations. They are commonly employed in wellhead equipment, Christmas trees, drilling manifolds, and production piping where pressures range from 5,000 to 15,000 PSI. As a premier China RX ring joint gasket supplier, Kaxite stocks standard sizes in low carbon steel, 304, and 316 stainless steel, with custom alloys available on request.
RX gaskets are designed to use internal fluid pressure to energize the seal – the higher the pressure, the tighter the seal, ensuring leak‑free performance in high‑pressure environments.
RX gaskets can be used in place of standard R‑type oval or octagonal gaskets in API 6B flanges – no modification to the flange or groove is required.
Rated for pressures up to 15,000 PSI, RX gaskets are the preferred choice for wellhead and production equipment where reliability is paramount.
Available in soft iron, low carbon steel, stainless steels (304/316/347/410), and exotic alloys to match your service conditions.
| Material | Hardness (HB) | Temperature Range (°C) | Typical Applications |
|---|---|---|---|
| Soft Iron | 90 | -60 to 500 | General oilfield service, moderate temperatures |
| Low Carbon Steel | 120 | -40 to 540 | High‑temperature service, refineries |
| SS304 / SS304L | 160 | -250 to 540 | Cryogenic to moderate high‑temp, general corrosion resistance |
| SS316 / SS316L | 160 | -200 to 815 | Superior corrosion resistance, chemical processing |
| SS321 / SS347 | 160 | -200 to 870 | High‑temperature service, sensitization resistance |
| SS410 | 170 | -200 to 850 | Hardness and wear resistance, valve applications |
| 5Cr‑0.5Mo | 130 | -29 to 650 | High‑temperature, sour service |
| Inconel 600 | 150 | -100 to 1095 | Severe corrosion and high‑temperature, aerospace |
| Incoloy 825 | 150 | -100 to 1095 | Corrosive environments, acid service |
Additional materials including Monel 400, Titanium, Hastelloy C276, and Zirconium available upon request.
Kaxite manufactures RX ring joint gaskets in full compliance with international standards, ensuring reliability in critical service:
Case Example: Onshore Wellhead Production System
A major oil & gas operator in the Permian Basin experienced recurring seal failures with standard octagonal gaskets on 10,000 PSI wellhead connections. Kaxite supplied RX Ring Joint Gaskets in 316 stainless steel for 4‑1/16" 10,000 PSI API 6B flanges. The pressure‑energized design provided immediate sealing improvement, and after 18 months of operation, zero leaks were reported. The operator has since standardized on RX gaskets for all high‑pressure wellhead applications, citing superior reliability and reduced maintenance costs.
Explore our complete range of ring joint gaskets, including API Ring Joint, Oval, Octagonal, BX, and Lens styles.
As a leading China RX ring joint gasket manufacturer, we combine technical expertise with manufacturing excellence:
To source RX ring joint gaskets wholesale, please specify:
Need custom sizes or specialty alloys? Send your inquiry and our engineering team will respond within 24 hours.
★ China's Leading RX Ring Joint Gasket Manufacturer – Request Your Quote
Contact Kaxite for factory‑direct pricing, custom alloys, and expert technical support.
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No 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
