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Yanmar 24321-000800 O-Ring (1A G80)

Heybeli Marine is a leading global supplier of high-precision engine components for Japanese marine diesel engines. The Yanmar 24321-000800, specified as a 1A G80 O-Ring, is a robust, larger-diameter sealing component engineered for critical stationary and high-pressure interface applications. The “G80” designation identifies it as a JIS G-series seal, which is specifically designed for fixed-flange and heavy-duty housing applications, while the “1A” specification denotes a high-grade elastomer optimized for extreme maritime durability.

Category: Brand: Product ID: 19400

Description

Technical Overview & Product Details

G-series O-rings are specialized for static sealing, where they must maintain a perfect barrier despite the high-pressure pulses, thermal expansion, and mechanical vibrations inherent in large marine diesel engines. The 24321-000800 is engineered to provide the structural reliability needed at major component junctions to prevent fluid migration and pressure loss.

  • Compatible Engine Type: Yanmar marine propulsion and auxiliary engine series.
  • Part Number / Designation: 24321-000800 (1A G80).
  • Component Type: O-Ring (G-Series / Stationary Seal).
  • Material: High-performance synthetic elastomer (1A grade, heat- and chemical-resistant).
  • Application: Primary flange sealing, large housing joints, and stationary fluid interfaces.

Key Features & Performance

  • Static Sealing Excellence: Optimized for “G-series” applications, providing superior performance in fixed flanges and housings where consistent contact pressure is vital.
  • High-Compression Integrity: Formulated to maintain its shape and sealing force under the high static loads experienced in major engine housing joints.
  • Chemical & Thermal Resistance: The 1A compound is built to resist degradation, swelling, or hardening when exposed to harsh marine environments, including diesel fuel, hot lubricating oils, and coolant additives.
  • JIS Precision: Manufactured to exact JIS G-series dimensions, ensuring the seal fits the groove perfectly, providing a secure, leak-proof interface without premature fatigue.

Why Source from Heybeli Marine?

A leak at a major engine joint can lead to significant fluid loss and contamination of the engine room. Heybeli Marine protects your vessel’s performance with:

  • Strict OEM Interchangeability: Our 24321-000800 seals are manufactured to meet the precise material hardness and dimensional tolerances required for Yanmar diesel engines.
  • Global Strategic Logistics: We maintain a dedicated inventory of large G-series seals, ensuring they are available for your major overhauls and maintenance schedules.
  • Quality Assurance: Each O-ring is inspected for structural consistency and surface finish, ensuring it is free from molding flaws that could compromise a critical seal.
  • Complete Overhaul Support: We supply these primary G-series seals alongside all necessary gaskets, fasteners, and related hardware to facilitate a professional, leak-free engine assembly.

Technical Maintenance Note:

Because G-series seals are used in critical, larger-diameter joints, proper installation is paramount:

  1. Mating Surface Inspection: Before installing the 24321-000800, inspect both mating surfaces. They must be clean, smooth, and free of old gasket debris, burrs, or oxidation.
  2. Uniform Tightening: When securing the housing or flange, use a cross-pattern tightening sequence and follow the manufacturer’s specific torque requirements. This ensures the O-ring is compressed uniformly across its entire circumference.
  3. Installation Lubrication: A thin, uniform coat of clean engine oil on the O-ring helps it seat properly during the initial clamping phase and prevents it from being pinched.
  4. No Reuse: Once a G-series O-ring has been compressed in a stationary joint, it develops a permanent “set” or deformation. Always install a new O-ring whenever a component is disassembled to guarantee future seal integrity.

Additional information

Brand

Yanmar