The GRACO 208312 Packing Nut is a replacement part designed for the 5:1 Ratio Monark Pump, Series D. It is typically constructed from durable materials such as carbon steel, stainless steel, or chrome-plated steel, and is used to secure and adjust the packing assembly within the pump, ensuring proper sealing and smooth operation of the pump’s displacement rod. Its primary function is to maintain pump integrity and prevent leaks during operation.

Key Features:

• Packing Nut
• For 5:1 Ratio Monark Pump, Series D
• Carbon Steel, 304 Grade Stainless Steel, Chrome Plating (based on typical wetted parts for this pump series)
• GRACO 5:1 Ratio Monark Pump, Series D
• Secures and adjusts packing assembly
• Helps maintain pump integrity and prevent leaks
• Designed for ease of maintenance and reliability
• Supports optimal pump life when properly maintained

Applications:
Used in industrial fluid handling systems, particularly where high-pressure and reliable sealing are required, such as in lubrication, maintenance, and spray foam applications.

Installation Notes:

• Using genuine GRACO parts ensures compatibility, reliability, and optimal performance of the pump. Non-genuine parts may compromise safety and equipment longevity.
• Ensure the packing nut/wet-cup is kept 1/2 filled with GRACO Throat Seal Liquid (TSL) or compatible solvent to help prolong packing life.
• Adjust the packing nut as needed to maintain proper sealing and prevent leaks.
• Regularly inspect and maintain the packing assembly to reduce downtime and extend pump life.