Makita Rubber Ring 25 For Hm1202C Demolition Hammer

Makita Rubber Ring 25 For Hm1202C Demolition Hammer

 O-ring (part #421691-8) that acts as a seal for the tool's internal components. Its purpose is to prevent grease and oil from leaking out, while also protecting the inner workings from dust and debris. 

Function and description
Part number: The Rubber Ring 25 has the official Makita part number 421691-8.
Sealing: It is a vital gasket that creates a tight seal inside the hammer's barrel or cylinder. This seal maintains the necessary air compression that powers the piston and striker to generate the tool's hammering action.
Prevention of leaks: Over time, the rubber O-rings can wear down and cause oil and grease to leak from the tool's barrel. Replacing this ring is a common repair to prevent these leaks.
Impact on performance: If this rubber ring is worn, it will allow air pressure to escape, resulting in poor or weak hammering performance. Replacing it can restore the tool's full power.
Location: While multiple rubber rings are used in the hammer, this specific ring is a component that helps seal the high-pressure parts of the tool's drive mechanism.