Description
Overview:
The O‑Ring 1A P‑125.0 is a Genuine Yanmar part designed to provide a tight, reliable seal in Yanmar engines and ancillary systems. Made from high‑quality, oil- and fuel‑resistant elastomer to OEM standards, it prevents leaks and maintains pressure across housings, covers, and pipe joints. The size code “P‑125.0” indicates a nominal inside diameter of 125.0 mm (4.92 in), suitable for a wide range of Yanmar diesel applications in construction, agriculture, marine, and industrial equipment. As a direct replacement for OEM No. 24311 001250, it supports routine maintenance and overhaul work where original sealing performance is required. This Genuine component helps maintain system efficiency, reduces downtime, and ensures dependable sealing in environments exposed to heat, vibration, and hydrocarbons.
Key Features:
- Genuine Yanmar OEM sealing component for assured fit and performance
- OEM reference: 24311 001250 (also see Alternate Part Numbers below)
- Nominal inside diameter: 125.0 mm (4.92 in)
- P‑series profile; typical cross‑section approx. 3.1 mm (0.12 in) under JIS conventions
- Engineered for resistance to engine oils, diesel, coolants, and common hydraulic fluids
- Maintains pressure integrity to reduce leaks and improve system reliability
- Durable elastomer for heat, vibration, and wear resistance in demanding service
- Smooth installation when lubricated; seats in standard P‑series O‑ring grooves
- Direct replacement to restore original sealing without modification
- Suitable for scheduled maintenance, repairs, and full engine or pump overhauls
Typical Applications:
Used in Yanmar diesel engines and driven equipment to seal covers, housings, pump flanges, thermostat bodies, filter heads, and pipe unions. Common in generators, compact excavators, agricultural machinery, marine auxiliaries, and hydraulic power packs where a 125 mm ID P‑series O‑ring is specified to prevent fluid loss and maintain pressure.
Also known as:
O‑ring seal, sealing ring, ring gasket, elastomer seal, JIS P‑125 O‑ring, 125 mm ID O‑ring, engine cover O‑ring, hydraulic O‑ring, fuel system O‑ring. Frequently referenced by its OEM number or size code in parts lists and service manuals.
Alternate Part Numbers:
24311 001250, 24311-001250, 24311001250
Product Specifications
| L&S Part No. | 24311 001250 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Yanmar |
| Unit of Sale | 1 |
| Fits Brands | Yanmar |
