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Yanmar 24326-000400 O-Ring (4D) G40

Heybeli Marine is a leading global supplier of high-precision sealing components for Japanese marine diesel engines. The Yanmar 24326-000400 O-Ring, specified as the 4D G40 size, is a versatile and mission-critical sealing element used throughout the Yanmar 6N18 engine series. Designed to maintain fluid and gas integrity in various high-pressure and high-temperature interfaces, this O-ring is essential for preventing leaks and maintaining the overall reliability of your marine propulsion and auxiliary systems.

Category: Brand: Product ID: 19339

Description

Technical Overview & Product Details

In the complex architecture of a medium-speed marine diesel engine, maintaining a perfect seal at every junction is non-negotiable. The 24326-000400 O-ring is engineered to provide a resilient, long-lasting seal in static or semi-dynamic applications where fluid pressure and thermal stress are constant factors. Whether used in cooling, lubrication, or fuel-related circuits, this component ensures that system pressures remain stable and contaminants are kept out.

  • Compatible Engine Type: Yanmar 6N18 (A)L-V series marine propulsion and auxiliary engines.
  • Part Number / Designation: 24326-000400 (O-Ring 4D G40).
  • Component Type: High-Pressure/High-Temperature O-Ring.
  • Material: Premium synthetic elastomer (Viton/FKM-grade) engineered for excellent chemical resistance and thermal stability.
  • Application: Versatile sealing for various engine components (manifold connections, pump housings, and fluid lines).

Key Features & Performance

  • Reliable Sealing under Pressure: Designed to withstand the high-pressure environments found within marine engine fluid circuits, preventing leakage and ensuring system efficiency.
  • Thermal Endurance: Formulated to retain its elasticity and sealing force despite the continuous exposure to engine heat, preventing the material from becoming brittle or cracking over long operational cycles.
  • Chemical Compatibility: Resistant to degradation from marine diesel oils, lubricating oils, and common engine coolant additives, ensuring that the seal does not swell, soften, or dissolve when in contact with system fluids.
  • Standardized Precision: Manufactured to the exact dimensions of the “G40” 4D specification, ensuring a perfect fit into grooves to eliminate the risk of extrusion or pinching during installation.

Why Source from Heybeli Marine?

Using non-standard or low-quality seals can lead to coolant leaks, oil loss, or even catastrophic fire risks if a seal fails in a high-pressure line. Heybeli Marine protects your vessel’s integrity with:

  • Strict OEM Interchangeability: Our 24326-000400 O-rings meet or exceed Yanmar’s original material and dimensional specifications, ensuring 100% compatibility for your maintenance needs.
  • Global Strategic Logistics: We maintain a large inventory of essential sealing components, ensuring that even small items like this are always in stock for rapid dispatch to your vessel, dry dock, or shipyard.
  • Quality Assurance: Every batch is verified for material composition and dimensional accuracy, ensuring that you receive a seal that will perform reliably from the moment of installation.
  • Comprehensive Maintenance Kits: We provide these O-rings as part of our specialized 6N18 maintenance kits, streamlining your procurement and ensuring you have every seal required for a complete job.

Technical Maintenance Note:

When installing the 24326-000400 O-ring, cleanliness is critical. Ensure the O-ring groove is free of dirt, old gasket material, or corrosion. We recommend lightly lubricating the O-ring with a compatible clean fluid (either oil or grease, depending on the application) to facilitate proper seating and prevent the ring from rolling or twisting as the housing is closed. Always replace O-rings with new units during any overhaul—never reuse an O-ring, as its ability to provide a pressure-tight seal is compromised once it has been compressed and aged in service.

Additional information

Brand

Yanmar

Model

6N18 (A)L-V