Graco fluid-handling pumps and spray systems where O-rings and packings are serviceable
Graco airless spray rigs requiring sealing of filter-housing or manifold connections
Graco maintenance kits for scheduled overhaul of valves and pump assemblies
Graco industrial finishing modules where sealing integrity under high pressure is critical
Product Description
The Graco 104804 Packing, O-Ring is an OEM-specified seal kit crafted to restore tight sealing and prevent fluid bypass in high-duty spray and fluid-handling equipment. Engineered to exact tolerances, it replaces worn or damaged O-rings and packing elements to maintain system pressure integrity and extend service life.
Key Features
OEM matched seal kit: Designed precisely for specified Graco assemblies.
High-grade elastomer material: Resists abrasion, fluid attack and cyclic wear.
Improves maintenance efficiency: Kit format simplifies service tasks.
Reduces downtime: Proper sealing limits leaks, wear and unexpected failures.
Technical Specifications
Specification
Details
Part Number
104804
Component Type
Packing & O-Ring Seal Kit
Intended Use
Sealing O-ring/packing cavities in Graco equipment
Material
High-tensile elastomer / engineered seal material
Service Environment
High-pressure spray/finishing systems
Applications
This kit is used across Graco systems where reliable sealing is essential — including pump modules, fluid filters, manifold assemblies and other high-cycle finishing equipment. By replacing worn seal elements with the 104804 kit, you restore performance and prevent leaks or pressure loss.
Performance Advantages
Helps maintain pressure stability by preventing fluid bypass or leaks.
Extends equipment durability through proper sealing integrity.
Simplifies servicing with a complete kit rather than multiple parts.
Supports consistent coating or fluid application by preserving system condition.
OEM-authorization assures compatibility with Graco assemblies.
Maintenance Tips
During routine service, remove the old O-rings and packings, clean the grooves and mating surfaces thoroughly, lubricate if required, then install the new seal elements from the 104804 kit. Ensure proper seating, inspect for damage or wear, and test the system under pressure to confirm no leaks before returning to service.
Frequently Asked Questions
The kit contains O-rings and packing seals matched to the specified equipment cavity — made to OEM fit for Graco equipment.
Install during preventive maintenance or if you notice signs of seal wear, leakage or reduced system performance in the associated assembly.
Reusing old seals is not advised — they may have deformed or eroded. Replace them to ensure optimal service life and performance.
Fitment depends on the model — verify your equipment’s service manual or parts list to confirm that 104804 is the correct kit for your assembly.
