Makita BA00000122 Spare Part - O RING 37.5*1.8 AF600

Makita BA00000122 — original Makita rubber O‑ring, 37.5 × 1.8 mm. This small but critical sealing ring is the factory replacement O‑ring used in the cylinder/air-seal assembly of the Makita AF600 pneumatic stapler/nailer — it restores airtight compression in the piston/cylinder and prevents leaks that cause misfires or loss of drive power.

Key details:
- Part number: BA00000122 (genuine Makita Part).
- Type: rubber O‑ring / sealing ring, dimension 37.5 mm inner/outer spec as listed (37.5 × 1.8 mm cross-section).
- Function/location: replacement cylinder O‑ring for the AF600 series pneumatic stapler — fits into the cylinder/piston sealing groove to maintain working air pressure.

Why this part matters: a worn or damaged O‑ring on a pneumatic stapler typically causes reduced driving force, air leaks, or inconsistent nail depth. Replacing the BA00000122 with the original Makita O‑ring returns the tool’s sealing integrity without modifying the tool or its performance.

Compatibility (example model):
- Makita AF600 pneumatic stapler / nailer.

This is a direct-fit Makita replacement O‑ring sized to match the factory groove and restore original sealing performance.