Makita 421899-4 — Seal Ring (gasket / O‑ring) — genuine Makita replacement

Replace a worn or damaged seal ring with this genuine Makita 421899-4 seal (gasket/O‑ring). This small rubber seal sits in the reciprocating saw’s drive/gear assembly to keep the internal area sealed against dust and fluid leakage and to preserve proper internal clearance and pressure. This part is sold individually and is a direct, drop‑in replacement manufactured to Makita’s original specification.

Fits Makita JR3060T and JR3070CT reciprocating saw models (listed in Makita parts breakdowns and parts suppliers’ listings). If your JR3060T or JR3070CT is showing seal failure, a simple swap of this seal ring restores the original sealing function without the need for other major repairs.

Why buy this part

- Genuine Makita part number 421899-4 for correct fit and long life.

- Simple replacement: small, lightweight seal that typically installs by removing the saw housing to access the drive area.

- Keeps your reciprocating saw sealed against dust and lubricant loss so the mechanism runs smoothly.

- A handy spare to keep with power tool parts for quick field or shop repairs.

Note: verify your tool model (JR3060T or JR3070CT) before ordering to ensure correct fit; the part number 421899-4 is referenced in official parts listings and multiple Makita parts suppliers.

Browse our full range of Makita reciprocating saw parts.