The GRACO 184039 is a packing nut, typically constructed from durable metal, designed to secure and seal the packing or seals within GRACO pump assemblies. Its primary function is to maintain proper compression and prevent leaks in the pump’s packing chamber, ensuring reliable operation of GRACO fluid handling equipment.

Key Features:

• Packing Nut
• 4.5 cm
• Compatible with GRACO Check-Mate 450 series pumps and similar models where a 4.5 cm packing nut is required
• Designed for secure fit and reliable sealing
• Facilitates easy maintenance and replacement of pump packings
• Supports long service life and consistent pump performance

Applications:
Used in GRACO fluid transfer and spray equipment, particularly in pumps requiring a 4.5 cm packing nut for sealing and maintenance of the packing chamber.

Installation Notes:

• Using genuine GRACO parts ensures proper fit, seal integrity, and equipment reliability, reducing the risk of leaks and downtime.
• Apply thread lubricant to the packing nut before installation to prevent galling and ensure smooth assembly.
• Torque the packing nut to 45–53 N.m (33–39 ft-lb) using the appropriate wrench for secure and leak-free operation.
• Fill the packing nut/wet-cup 1/3 full with GRACO Throat Seal Liquid or compatible solvent to maintain proper lubrication and seal life.
• Follow all safety and maintenance guidelines in the GRACO equipment manual.