Oil Seal 20-42-7 for Power Trowel DMR1000 | Gearbox Shaft Seal

The Spartech Oil Seal 20-42-7 is a precision gearbox sealing component designed for the Power Trowel DMR1000 equipped with Honda GX160 engine. This oil seal is installed around the rotating gearbox shaft to prevent lubricant leakage and protect internal transmission components from dust, moisture, and concrete particles.

Manufactured from high-quality oil-resistant rubber with reinforced outer casing, the seal ensures a tight fit and long service life under high-speed rotation and continuous load conditions.

Proper oil sealing is essential to maintain gearbox lubrication, reduce internal friction, and extend the lifespan of gears and bearings.

Key Features:

• Precision size: 20 × 42 × 7 mm
• Prevents gearbox oil leakage
• Protects internal gears and bearings
• Oil-resistant rubber construction
• Durable under high-speed rotation
• Direct-fit replacement for DMR1000

Use Case:

• Replacement of leaking oil seal
• Preventing gearbox oil loss
• Protecting shaft and bearing assembly
• Routine preventive maintenance