Comprehensive Overview of Graco 107079 O-Ring Packing
The Graco 107079 O-Ring Packing is an OEM-level sealing component designed to maintain pressure integrity and prevent fluid bypass in high-performance spray, coating, and fluid-handling systems.
Compatible Machines
- Graco Pneumatic Back-Pressure Regulator – Model 288262 (2-in sanitary inlet/outlet) — this O-ring is listed as the seal for the regulator seat.
- Graco Pneumatic Back-Pressure Regulator – Model 288311 (1-1/2-in NPT inlet/outlet) — includes part 107079 in its inlet/outlet module seal kit.
- Graco Surge Tank & Inlet/Outlet Fitting Assemblies — documentation shows “107079 O-ring” used with each inlet/outlet fitting in fluid-handling systems.
Key Features
- OEM-certified component ensures precise fit and performance in Graco equipment.
- Critical sealing ring designed for high pressure fluid systems to eliminate leaks and preserve system integrity.
- Durable elastomer design withstands fluid exposure, dynamic pressure cycles and repeated servicing.
- Compact replacement part that integrates seamlessly into existing Graco assemblies without modification.
Technical Specifications
| Specification | Details |
| Part Number | 107079 |
| Component Type | O-Ring / Packing Seal |
| Usage in Machines | Regulator seat assemblies, pump inlet/outlet fittings in Graco fluid systems |
| Material | High-purity elastomer (nitrile or equivalent) designed for high pressure and fluid compatibility |
| Application | High pressure fluid handling, airless spray system leak prevention, dynamic seal environments |
Installation & Maintenance Guidelines
- Fully depressurize the system and isolate fluid flow before replacing the O-ring.
- Inspect the sealing groove and mating surfaces for wear, debris or damage prior to installation.
- Lubricate the new O-ring with a compatible lubricant (if recommended by Graco) and install carefully without twisting or stretching.
- Replace the packing ring when you observe leaks, pressure loss, or when performing major servicing and rebuilds.
Frequently Asked Questions
The O-Ring provides a pressure-tight seal within regulator or pump inlet/outlet assemblies, preventing fluid seepage and maintaining system pressure integrity.
Refer to the parts diagram or service manual of your specific equipment model. If you locate “O-Ring / Packing – 107079” in the regulator or pump module parts list, then it is the correct replacement.
While the size may fit other equipment, this part is designed to meet specific Graco material, dimensional and performance standards. Using it outside its intended systems may compromise reliability or warranty coverage.
Replace the O-ring during scheduled maintenance if you observe signs of wear, leakage, material hardening, cracking or if the system has undergone frequent servicing or high-cycle operation.
Selecting the correct sealing component such as the Graco 107079 O-Ring Packing ensures leak-free performance, consistent pressure integrity and long service life in demanding fluid-handling and spray equipment.
