Description
Overview:
The O Ring 21 (Makita 213381-5) is a genuine Makita rubber sealing ring used in SDS‐Plus rotary hammers to maintain airtight and grease-tight joints inside the hammer mechanism. Designed to suit Makita assemblies precisely, it prevents leaks, preserves internal pressure, and supports consistent hammering performance. Made from durable rubber, it resists wear from repetitive impact, vibration, and exposure to lubricants. This seal is commonly fitted around internal components such as pistons, cylinders, or gearcase interfaces where a reliable barrier is required. Ideal for servicing models including BHR242 and BHR243, it helps keep tools running efficiently and reduces premature wear of moving parts. A direct-fit, Genuine Part for dependable compatibility and long service life in demanding site or workshop conditions.
Key Features:
- Genuine Makita part (213381-5) for correct fit and reliable performance
- Durable rubber construction designed to withstand impact, heat, and lubricants
- Maintains sealing pressure to reduce air and grease leaks inside the tool
- Helps restore consistent hammer action when original seals are worn
- Precision-made for the listed Makita SDS rotary hammer models
- Supports tool longevity by keeping contaminants out of critical areas
- Suitable for routine servicing and preventative maintenance
- Straightforward to fit during overhauls with standard workshop practices
Typical Applications:
Used during service or repair of Makita SDS‐Plus rotary hammers to reseal internal interfaces such as the cylinder, piston, or gearcase. Suitable when addressing loss of impact energy, visible grease seepage, air leaks, or during scheduled strip-downs to maintain performance and reliability in construction, maintenance, and DIY tasks.
Also known as:
O‐ring 21, sealing ring, rubber seal, rubber gasket, tool seal, rotary hammer seal, Makita seal ring.
Fits Models:
BHR242, BHR243, DHR242RFE, DHR242RFEV, DHR242RMJ, DHR242RMJV, DHR242Z, DHR243RFE, DHR243RFEV, DHR243RMJ, DHR243RMJV, DHR243Z, HR2300, HR2300S, HR2600, HR2601, HR2610, HR2611F, HR2611FT, HR3520
Alternate Part Numbers:
2133815
Product Specifications
| L&S Part No. | 213381-5 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Makita |
| OEM No. | 213381-5 |
| Unit of Sale | 1 |
| Applications | BHR242, BHR243, DHR242RFE, DHR242RFEV, DHR242RMJ, DHR242RMJV, DHR242Z, DHR243RFE, DHR243RFEV, DHR243RMJ, DHR243RMJV, DHR243Z, HR2300, HR2300S, HR2600, HR2601, HR2610, HR2611F, HR2611FT, HR3520 |
| Machine Type | Rotary Hammer |
| Fits Brands | Makita |
| Fits Models | BHR242 | BHR243 | HR2300 | HR2600 | HR2601 | HR2610 | HR2611F | HR2611FT | HR3520 | DHR242RFE | DHR242RFEV | DHR242RMJ | DHR242RMJV | DHR242Z | DHR243RFE | DHR243RFEV | DHR243RMJ | DHR243RMJV | DHR243Z |
