The Makita 213073-6 is a genuine OEM O Ring 9, designed to restore and maintain critical grease-tight and airtight seals within compatible Makita cordless rotary hammers. Manufactured from durable, oil-resistant rubber, this sealing ring is precision-sized for like-for-like replacement in specified assemblies. It helps prevent grease loss and dust ingress — both of which can significantly degrade hammer action and drilling efficiency over time. This part is an essential service item for overhauls and routine maintenance of the Makita BHR240, BHR241, and BHR242 cordless rotary hammers. Correct sealing within the hammer and drive mechanisms is vital for consistent impact performance, component longevity, and safe operation — making this a component worth keeping to hand. As a genuine Makita spare, it offers assured compatibility and performs to the same standards as the original part. Whether you're carrying out a full rebuild or addressing a specific grease leak, the 213073-6 delivers a reliable, straightforward solution without the guesswork of aftermarket alternatives. Features and Benefits: • Genuine Makita OEM part for confirmed compatibility with specified models • Oil-resistant rubber construction withstands vibration, impact, and lubricant exposure • Helps prevent grease leaks and dust ingress for consistent hammer performance • Precise sizing ensures quick, accurate fitment during servicing or component rebuilds • Helps reduce premature wear on mating components by maintaining proper seal integrity • Compact and lightweight — practical to carry as an on-site spare • Compatible with Makita BHR240, BHR241, and BHR242 cordless rotary hammers