Aviation Parts Manufacturers for GEnx No.4 Bearing Seal Ring

Aviation Parts Manufacturers for GEnx: No.4 Bearing Seal Ring (438 TO GE)

Is Your GEnx Engine Protected by the Right Seal?

For engine maintenance professionals and procurement managers, sourcing high-quality aircraft parts isn't just a task—it's a responsibility. One small failure in a single component like a bearing seal can lead to catastrophic engine issues, unplanned downtime, and costly repairs. That’s why aviation parts manufacturers must meet the highest quality standards and offer a wide range of certified components.

One such essential part is the No.4 Bearing Seal Ring (438 TO GE), a component specifically engineered for the GEnx engine platform. Let’s explore how the right supplier can help you protect your engine, budget, and schedule.

What Is the 438 TO GE Bearing Seal Ring?

The 438 TO GE is a high-precision sealing ring located in the turbine bearing section of the GEnx aircraft engine. Its core function is to:

• Maintain a tight seal around the No.4 bearing

• Prevent lubricant leakage

• Block hot gas backflow from damaging internal components

• Maintain pressure and temperature equilibrium

While the part itself is compact, its role in preserving turbine health is enormous. That’s why aircraft manufacturers and fleet operators rely on it for both OEM builds and ongoing maintenance operations.

The Real Cost of Low-Quality Bearing Seals

Using substandard or mismatched aircraft parts often leads to:

• Bearing overheating and premature failure

• Lubrication breakdown and oil contamination

• Shaft misalignment and vibration

• Non-compliance with FAA and EASA regulations

When aviation parts manufacturers fail to uphold strict quality assurance protocols, the consequences ripple across operations, affecting both safety and profitability.

Why Precision in Parts Manufacturing Matters

The 438 TO GE is positioned in one of the most heat-intense zones of the GEnx engine. It must withstand:

• Temperatures exceeding 1,200°C

• Continuous thermal cycling

• High-speed rotational friction

• Mechanical vibration during takeoff and landing

This level of stress demands materials like nickel-based superalloys, and machining tolerances within microns. Only a handful of aviation parts manufacturers can consistently deliver this level of precision.

Liyan International: A Proven Leader in Aviation Parts Manufacturing

At Liyan International, we specialize in high-performance parts manufacturing for modern jet engines, including the GEnx platform. Our No.4 Bearing Seal Ring (438 TO GE) is designed, machined, and tested to meet the strictest aerospace quality standards.

Here’s what sets us apart:

✅ Certified Quality Management System

Our operations follow an ISO/AS9100-certified management system, ensuring every seal ring meets international standards for aerospace components.

✅ Wide Range of Components

We offer a wide range of GEnx-compatible parts, including sealing rings, bearing housings, mounting supports, and turbine hardware. This simplifies sourcing and logistics for our clients.

✅ End-to-End Quality Assurance

From raw material inspection to non-destructive testing (NDT), we implement multi-step quality assurance checks at every stage of production.

✅ OEM-Compatible Design

Our 438 TO GE seal rings match GE Aviation’s exact specifications, meaning they drop into existing engine assemblies with zero modification needed.

Key Benefits for Aircraft Manufacturers and MRO Providers

Choosing the right supplier for the 438 TO GE seal ring delivers measurable value:

How Liyan Solves Your Sourcing Pain Points

We understand what aircraft parts buyers and technical teams need: fast answers, guaranteed specs, and dependable delivery.

Trusted by Aviation Professionals Worldwide

We serve:

• ✈️ Commercial airlines using GEnx-powered Boeing aircraft