Description
Overview:
This Genuine Hitachi/Hikoki O-Ring (OEM No. 986104) is a replacement sealing ring for a wide range of Hikoki/Hitachi rotary hammers. Made from durable rubber, it delivers a tight, reliable seal to maintain internal pressure and retain grease, helping the tool deliver consistent impact performance while preventing leaks. Designed for the hammer mechanism and related sealing points, it supports smooth operation and protects internal components against premature wear. Engineered for a precise fit in compatible tools, it is ideal for routine servicing or repairs. Suitable for many popular models, including DH35 and DH38MS, this O-ring helps keep professional and DIY equipment working efficiently and safely under demanding site and workshop conditions.
Key Features:
- Genuine Hitachi/Hikoki part for assured compatibility and performance (OEM 986104)
- Durable rubber construction for long service life under vibration and load
- Provides a dependable seal to maintain pressure and retain grease, reducing leaks
- Helps protect internal components by limiting dust and debris ingress
- Precision fit for rotary hammer assemblies to support consistent impact power
- Straightforward to install during routine maintenance, minimising downtime
- Wide model coverage across DH38, DH40, DH50 and DH52 series tools
- Suitable as a preventative maintenance item to restore sealing integrity
Typical Applications:
Used when servicing the hammer mechanism or gearbox area of Hikoki/Hitachi rotary hammers to restore sealing, prevent grease loss, and maintain impact efficiency. Ideal for leak fixes, pressure-related performance issues, and scheduled maintenance on job sites, in workshops, and for plant hire fleets.
Also known as:
Seal ring, sealing gasket, gasket ring, packing ring, elastomer O ring, rotary hammer seal, O ring seal.
Fits Models:
DH35, DH3640DA, DH3640DB, DH36DSA, DH36Dma, DH38MS, DH38SS, DH38YE, DH38YE2, DH38YE3, DH40FR, DH40MC, DH40MEY, DH40MEY2, DH40MR, DH40MRY, DH40SC, DH40SR, DH50MR, DH50MRY, DH52MA, DH52ME, DH52MEY, H41, H41MB, H41SA, H41SC, H41SD, H60ME, H60MEY
Alternate Part Numbers:
986104, HKK986104
Product Specifications
| L&S Part No. | HKK986104 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Hitachi/Hikoki |
| OEM No. | 986104 |
| Unit of Sale | 1 |
| Applications | DH35, DH3640DA, DH3640DB, DH36DSA, DH36Dma, DH38MS, DH38SS, DH38YE, DH38YE2, DH38YE3, DH40FR, DH40MC, DH40MEY, DH40MEY2, DH40MR, DH40MRY, DH40SC, DH40SR, DH50MR, DH50MRY, DH52MA, DH52ME, DH52MEY, H41, H41MB, H41SA, H41SC, H41SD, H60ME, H60MEY |
| Machine Type | Rotary Hammer |
| Fits Brands | Hikoki |
| Fits Models | DH36DMA | DH38MS | DH40MC | DH40MRY | DH50MR | DH50MRY | DH52ME | DH52MEY | H41MB |
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