Description
Overview:
The Makita Labyrinth Rubber Ring (MPN 421868-5) is a genuine replacement sealing ring designed to protect the internal components of selected Makita power tools. Made from durable black elastomer rubber, it forms a labyrinth barrier that helps prevent dust, swarf, and other fine debris from reaching bearings, gears, and motor chambers. By keeping contaminants out, it supports consistent power delivery and reduces premature wear. Engineered for an accurate OEM fit, this ring is used across various tools, including the JS1601 metal shear and PJ7000 plate joiner, as well as multiple angle and die grinders and screwdrivers listed below. It is a practical choice for routine maintenance or like-for-like replacement during repairs, restoring the factory seal so the tool operates smoothly in demanding site and workshop conditions.
Key Features:
- Genuine Makita part (MPN 421868-5) for assured compatibility and quality
- Hard-wearing rubber construction resists abrasion, heat, and vibration
- Labyrinth profile helps deflect dust and fine particles away from critical parts
- Protects bearings, armature, and gear train to extend tool service life
- Maintains performance and helps reduce downtime caused by debris ingress
- Precise OEM dimensions for a secure, accurate fit in the housing
- Straightforward replacement during servicing with standard workshop tools
- Suitable for a wide range of compatible grinders, shears, screwdrivers, joiners, and rotary hammers
- Supports reliable operation in heavy-duty cutting, grinding, drilling, and fastening tasks
- Makita Genuine Part status helps ensure long-term reliability and consistency
Typical Applications:
Used during servicing or repair to reinstate the dust barrier in compatible Makita tools, particularly those operating in abrasive environments. Ideal for metal shearing, angle grinding, die grinding, drywall screwdriving, plate joining, and light hammer drilling, where airborne dust and swarf are common and component protection is critical to performance and longevity.
Also known as:
Labyrinth seal, dust seal, bearing seal ring, sealing ring, dust cover ring, protective seal ring for power tools, motor end seal.
Fits Models:
9553NB, 9554NB, 9555NB, 9556NB, 9556PB, 9557NB, 9557PB, 9558NB, 9558NBR, 9558PB, BO6050, FS2300, FS2500, FS2700, FS4300, FS6300, GA4030R, GA4034, GA4530R, GA4534, GA5030R, GA5034, GD0600, GD0602, HR1830, JS1601, PJ7000
Alternate Part Numbers:
4218685
Product Specifications
| L&S Part No. | 421868-5 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Makita |
| OEM No. | 421868-5 |
| Unit of Sale | 1 |
| Applications | 9553NB, 9554NB, 9555NB, 9556NB, 9556PB, 9557NB, 9557PB, 9558NB, 9558NBR, 9558PB, BO6050, FS2300, FS2500, FS2700, FS4300, FS6300, GA4030R, GA4034, GA4530R, GA4534, GA5030R, GA5034, GD0600, GD0602, HR1830, JS1601, PJ7000 |
| Machine Type | Handheld Construction Tools |
| Fits Brands | Makita |
| Fits Models | HR1830 | FS2300 | FS2500 | FS2700 | FS4300 | FS6300 | 9553NB | 9554NB | 9555NB | 9556NB | 9556PB | 9557NB | 9557PB | 9558PB | GA4034 | GA4534 | GA5034 | BO6050 | GA4030R | GA4530R | GA5030R | 9558NB | 9558NBR |
