Description
Overview:
This Seal / O Ring (Makita part number 421977-0) is a genuine Makita rubber sealing ring designed to maintain airtight and grease-tight joints in compatible cordless tools. Made from durable, flexible rubber, it sits in a machined groove to create a reliable seal that helps prevent leaks and keeps out dust and debris. This supports smooth running, consistent performance, and reduced wear on internal components. It is commonly used in Makita cordless circular saws such as the BCS550 and BSS500, and is also utilised across various other Makita cordless machines that share the same seal size and specification. Precision-moulded for an accurate fit, this O ring restores correct sealing performance when replacing a worn, flattened, or damaged original part. Supplied as a Genuine Part for assured compatibility and reliability.
Key Features:
- Genuine Makita part for correct fit and performance
- Durable rubber construction resists compression set and wear
- Helps prevent grease leakage and ingress of dust and debris
- Supports consistent tool performance and component life
- Precision-moulded O ring for stable sealing in the groove
- Suitable for a range of compatible Makita cordless tools
- Simple like-for-like replacement; no modifications required
- Maintains pressure and sealing integrity in housings and joints
- OEM quality assurance with part number 421977-0
- Compact, circular profile ideal for confined sealing locations
Typical Applications:
Used to seal housings, covers, and mating parts within Makita cordless circular saws and other compatible tools. Ideal when servicing gearcases or enclosures where grease retention and dust exclusion are critical. Replace during routine maintenance whenever an O ring shows signs of flattening, cuts, cracking, or loss of elasticity.
Also known as:
O ring, sealing ring, rubber ring, gasket ring, seal ring, packing ring, rubber gasket.
Fits Models:
BCS550, BSS500, BSS501, DCS550RMJ, DCS550Z, DGD800RFE, DGD800RMJ, DGD800Z, DJS160RFE, DJS160Z, DJS161RFE, DJS161RMJ, DJS161Z, DPJ140RFE, DPJ140Z, DPJ180RFE, DPJ180Z
Alternate Part Numbers:
4219770
Product Specifications
| L&S Part No. | 421977-0 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Makita |
| OEM No. | 421977-0 |
| Unit of Sale | 1 |
| Applications | BCS550, BSS500, BSS501, DCS550RMJ, DCS550Z, DGD800RFE, DGD800RMJ, DGD800Z, DJS160RFE, DJS160Z, DJS161RFE, DJS161RMJ, DJS161Z, DPJ140RFE, DPJ140Z, DPJ180RFE, DPJ180Z |
| Machine Type | Circular Saw |
| Fits Brands | Makita |
| Fits Models | BCS550 | BSS500 | BSS501 | DGD800RMJ | DGD800RFE | DGD800Z | DPJ180RFE | DPJ140Z | DPJ180Z | DPJ140RFE | DCS550RMJ | DCS550Z | DJS160RFE | DJS161Z | DJS160Z | DJS161RFE | DJS161RMJ |
