The Koshin Φ20 Mechanical Seal (Part Number: 012320401) is an essential Original Equipment Manufacturer (OEM) replacement component designed for Koshin centrifugal water and trash pumps.

Measuring 20mm (Φ20) in inner diameter, this mechanical seal is a vital internal barrier. It sits on the drive shaft between the pump casing and the engine, preventing water from leaking out of the volute and protecting the engine crankcase from water damage. Replacing a worn or leaking mechanical seal is crucial for maintaining your pump's suction performance and overall lifespan.

Key Features & Specifications:

• Part Number: 012320401

• Manufacturer: KOSHIN LTD.

• Size: Φ20 (20mm shaft diameter)

• Quantity: 1 Piece

• Function: Creates a watertight seal around the engine drive shaft to prevent fluid leaks.

• Quality: Built with high-grade, abrasion-resistant materials (typically carbon/ceramic) to withstand the high friction and heat generated during heavy-duty pumping.

This genuine Koshin part ensures an exact, factory-grade fit for compatible Koshin pump models, restoring peak pressure and reliable, leak-free operation.