Ax Ring Gaskets
Product Description
Product Detail
Ax Ring Gaskets – Forged Solid Metal Seals for Offshore & High‑Pressure Systems
Kaxite Sealing is a leading China-based manufacturer and supplier of Ax ring gaskets – precision‑forged, solid metal sealing rings designed for the most demanding offshore and subsea applications. Manufactured through a rigorous process of forging, heat treatment, and machining, these gaskets provide a reliable, pressure‑energised seal that outperforms traditional API ring gaskets. Ax ring gaskets are lightweight, easy to install, and ideal for hydraulic connectors and wellhead connections where time and weight savings are critical.
As a trusted factory direct supplier in China, Kaxite offers custom materials (including Inconel®, Monel®, Hastelloy®), competitive wholesale pricing, and fast global delivery. Request your price list and free sample →
Solid Forged
No welds, high integrity
Pressure Energised
Higher pressure = tighter seal
API Replacement
Direct substitute for ring joints
Light & Fast
Saves installation time
Offshore Ready
Designed for drilling systems
Technical Specifications
- Type: Solid forged octagonal ring joint (AX series)
- Sealing Principle: Pressure‑energised, radial metal‑to‑metal contact
- Hardness: 15–20 HB lower than mating flange (critical for sealing)
- Surface Finish: Ra ≤ 0.8 µm (bevel faces, no scratches or defects)
- Manufacturing: Forging → heat treatment → precision machining
- Standards: API 6A, 17D; NORSOK; ASME B16.20 compatible
Available Materials
* Custom grades available for sour gas (NACE) or high‑temperature service.
Advantages of Ax Ring Gaskets over Standard API Ring Joints
- ✅ Lighter weight – reduces handling and structural demands
- ✅ Faster installation – replaces heavy, time‑consuming API flanges
- ✅ Pressure‑energised – sealing improves as pressure increases
- ✅ Direct replacement – fits existing API ring joint grooves
- ✅ Forged construction – no welds, superior structural integrity
- ✅ Radial sealing – effective even under extreme thermal cycling
- ✅ Reusable – if undamaged, can be reused multiple times
- ✅ Wide material choice – from soft iron to exotic alloys
Key Applications
Installation & Hardness Requirements – Critical for Seal Integrity
- 🔹 Hardness rule: The Ax ring gasket hardness must be 15–20 HB lower than the mating flange face hardness to ensure proper deformation and sealing.
- 🔹 Surface finish: Bevel sealing faces must have a roughness Ra ≤ 0.8 µm and be free of scratches, dents, cracks, or defects.
- 🔹 Inspect before installation – check for any damage during transport.
- 🔹 Clean flange groove – remove all debris and old gasket material.
- 🔹 Apply anti‑seize – a thin layer of approved compound can aid installation.
- 🔹 Torque evenly – follow the flange manufacturer's bolt‑loading sequence.
- 🔹 Retorque after thermal cycling – for high‑temperature applications.
Frequently Asked Questions – Ax Ring Gaskets
What is an Ax ring gasket and how is it different from a standard RTJ?
An Ax ring gasket is a solid forged metal seal with an octagonal cross‑section, designed for compact hydraulic connectors in offshore drilling. Unlike standard API ring joint gaskets (oval/octagonal), Ax rings are pressure‑energised and provide a radial sealing effect, allowing lighter weight and faster installation.
Why is the hardness of the Ax ring important?
The ring must be 15–20 HB softer than the flange faces to deform slightly under pressure and create a leak‑tight metal‑to‑metal seal. If the ring is harder, it may not seat properly, leading to leakage.
Can Ax ring gaskets replace standard API ring joint gaskets?
Yes, Ax ring gaskets are designed to be direct replacements for API ring joint gaskets in many applications, especially where weight and installation time are critical (e.g., offshore). However, always verify flange groove compatibility and hardness requirements.
What materials are available for Ax ring gaskets?
Kaxite offers a wide range including Soft Iron, Low Carbon Steel, SS304/316, Inconel® 625/718, Monel® 400, Hastelloy® C276, Titanium, and many more. We also supply NACE‑compliant grades for sour service.
What surface finish is required for Ax ring gasket sealing faces?
The bevel sealing faces must have a surface roughness Ra ≤ 0.8 µm and be completely free of scratches, cracks, or defects to ensure a gas‑tight seal.
Can Kaxite produce custom‑sized Ax ring gaskets?
Absolutely. We manufacture Ax ring gaskets in all standard API sizes and can also produce custom dimensions to meet your specific flange requirements.
Why Source from Kaxite Sealing – Your Trusted China Partner
- ✔ 20+ years of metal gasket manufacturing expertise
- ✔ ISO 9001 & PED certified production
- ✔ Exported to 40+ countries including Norway, UK, USA, and Middle East
- ✔ In‑house forging and heat treatment capabilities
- ✔ Full traceability – material certs (EN 10204 3.1 & 3.2)
- ✔ Hardness testing and dimensional inspection on every batch
- ✔ Flexible logistics – sea, air, express from Ningbo/Shanghai
- ✔ 24/7 technical support – responsive engineering team
Packaging & Worldwide Delivery
* Custom packaging and labelling available. View packaging & shipping details →
Ready to Order? Contact Kaxite – China's Reliable Ax Ring Gasket Manufacturer
As a premier China supplier of forged Ax ring gaskets, Kaxite provides high‑quality products at factory‑direct prices. Whether you need a sample, a price list, or a bulk order, our experienced team is ready to support you with technical advice and prompt service.
📞 Call us: 0086-574-87527771 | ✉️ Email: cindy@seal-china.com | 🌐 Visit: www.metal-jacketed-gaskets.com