The Makita Genuine 213381-5 O Ring 21 is a precision rubber sealing component designed specifically for Makita BHR242 and BHR243 SDS rotary hammers. This genuine replacement part maintains airtight and grease-tight seals within the hammer mechanism, preventing leaks and preserving the internal pressure essential for consistent impact performance. Manufactured from durable rubber compound, this O-ring withstands the demanding conditions inside rotary hammer mechanisms, including repetitive impact forces, vibration, and continuous exposure to lubricants and heat. It is commonly fitted around critical internal components such as pistons, cylinders, and gearcase interfaces where reliable sealing is essential to prevent contamination and maintain tool efficiency. Ideal for routine servicing and preventative maintenance, this seal helps restore optimal hammer action when original components show signs of wear or degradation. Using genuine Makita parts ensures precise fitment and compatibility with original specifications, supporting long service life and dependable performance in both workshop and site conditions. Professional tradespeople servicing these models will find this component straightforward to fit during standard tool overhauls. Fits Models: • BHR242, BHR243, DHR242RFE, DHR242RFEV, DHR242RMJ, DHR242RMJV, DHR242Z, DHR243RFE, DHR243RFEV, DHR243RMJ, DHR243RMJV, DHR243Z, HR2300, HR2300S, HR2600, HR2601, HR2610, HR2611F, HR2611FT, HR3520 Features and Benefits: • Genuine Makita part (213381-5) ensures exact fitment and reliable performance • Durable rubber construction resists impact, heat, and lubricant exposure • Maintains critical sealing pressure to prevent air and grease leaks • Helps restore consistent hammer action when original seals are worn • Precision-manufactured for Makita BHR242 and BHR243 SDS rotary hammer models • Keeps contaminants out of critical areas to support tool longevity • Suitable for routine servicing and preventative maintenance programme

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