Graco 102640 Backup Washer
The Graco 102640 Backup Washer is a genuine OEM part that ensures reliable sealing support in high-pressure spray systems. Ideal for maintaining performance and preventing leaks.
- Part Number: 102640
- Fits: Graco Viscount & HydraMax Systems
- Function: Supports O-ring under high pressure
- Use: Airless sprayers & hydraulic pumps
Detailed Overview of Graco 102640 Backup Washer
The Graco 102640 Backup Washer is a genuine OEM part designed for durability and precision in high-pressure airless sprayer systems. It serves as a secondary seal support, preventing extrusion of primary packing and ensuring consistent performance in demanding spray environments.
Compatible Machines
This washer fits the following Graco equipment:
- Graco Hydraulic Motor Models: 207-393, 208-918, and 208-270
- Graco Viscount Series Hydraulic Motors
- Airless Paint Sprayer Systems using Viscount or HydraMax assemblies
- Other compatible Graco high-pressure filtration and pump systems
Key Features
| OEM Part Number | 102640 |
|---|---|
| Function | Provides backup sealing support for high-pressure systems |
| Material | High-grade thermoplastic with steel reinforcement |
| Dimensions | Approx. 1.2″ x 0.1″ x 0.1″ |
| Temperature Range | -40°C to 250°C |
| Compatibility | Ideal for airless sprayers, hydraulic pumps, and industrial coating systems |
Performance & Benefits
- Ensures longer seal life by reducing O-ring wear
- Maintains consistent system pressure and prevents leakage
- Resistant to corrosion, chemicals, and high operating temperatures
- Reduces downtime and supports extended maintenance intervals
Installation & Maintenance
When installing the Graco 102640 Backup Washer, ensure the system is depressurised and the sealing surfaces are clean. Align it precisely in the pump gland and apply light grease for smoother installation. Regular inspection every 500 hours of use helps maintain optimal performance and seal longevity.
Applications
- Airless paint sprayers and coating systems
- Industrial finishing lines and high-pressure pumps
- Hydraulic and lubrication circuits
- Automotive, aerospace, and machinery coating operations
Frequently Asked Questions
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