Graco 105279 Back-Up Ring
The Graco 105279 Back-Up Ring is a high-performance PTFE support ring designed for high-pressure Graco sprayers and filtration systems, ensuring long-lasting O-ring protection and leak-free operation.
- Part Number: 105279
- Material: PTFE (Teflon)
- Use: Supports O-ring seals under high pressure
- Fits: Graco filters and airless sprayer assemblies
- Benefit: Prevents seal extrusion and extends service life
Graco 105279 Back-Up Ring – Premium PTFE Seal Support for High-Pressure Systems
The Graco 105279 Back-Up Ring is an engineered sealing component crafted to ensure extended service life and reliable performance in high-pressure filtration and spray applications. Constructed from advanced PTFE, it supports primary seals, maintains fluid integrity and reduces downtime in demanding working environments.
Key Features
- Material: High-grade PTFE for chemical resistance and low friction
- Function: Supports and protects O-rings in high-pressure filter assemblies
- Design: Precision machined for tight tolerances and consistent performance
- Effectively prevents seal extrusion, especially under cyclic pressure loads
- Ideal for industrial airless sprayer systems and filter housings
Technical Specifications
| Property | Specification |
|---|---|
| Part Number | 105279 |
| Material | PTFE (Teflon) |
| Typical Pressure Capability | Designed for high-pressure filter use (multiple thousands psi) |
| Typical Temperature Range | Wide thermal range to accommodate industrial conditions |
| Function | Prevents O-ring extrusion and maintains seal integrity |
| Applications | High-pressure filters, airless sprayers, industrial coating systems |
Performance Benefits
- Enhances seal life by supporting elastomeric O-rings in high-stress environments
- Reduces downtime by maintaining consistent seal performance
- Improves fluid system reliability and reduces risk of leakage or contamination
- Suitable for both solvent-based and waterborne coating systems in industrial use
Installation & Maintenance Advice
- Ensure the filter housing or pump cavity is clean and free of debris before installation
- Seat the back-up ring with proper orientation and alignment to avoid misfit or extrusion
- Apply a light film of compatible lubricant to improve seal run-in and minimize wear
- Inspect the assembly periodically for signs of extrusion, wear or chemical attack and replace as needed
Conclusion
The Graco 105279 Back-Up Ring plays a critical role in high-pressure sealing systems by providing structural support to primary O-rings and preserving system integrity. Its precision engineering and robust material makeup ensure that your airless sprayer or filtration setup remains dependable, reducing maintenance burdens and maintaining optimal finishing results in industrial environments.
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