Graco 15A185 PTFE with Carbon Packing – High‑Performance Seal
The Graco 15A185 PTFE with Carbon Packing is a premium OEM seal designed for Graco pump and regulator assemblies. Combining the chemical resistance of PTFE with the strength and wear‑resistance of carbon, this packing delivers reliable sealing under high pressure and aggressive operating conditions.
Product Overview
This packing is engineered to provide a durable barrier between moving pump parts or regulator components, minimizing fluid bypass and leakage. The PTFE base offers low friction and excellent chemical compatibility, while the embedded carbon enhances structural integrity and wear resistance. It is ideal for applications where long service life and consistent performance are required.
Key Features
- OEM Graco part — Part Number: 15A185
- Hybrid material design: PTFE for chemical resistance + carbon for durability
- Low friction seal to reduce internal wear and increase efficiency
- Withstands high-pressure cycles and aggressive fluid environments
- Engineered for extended service life in pump and regulator assemblies
Technical Specifications
| Part Number |
15A185 |
| Material |
PTFE with Carbon Fill |
| Function |
Packing / Seal for Pumps or Regulators |
| Applications |
High-pressure Graco pump lower assemblies and pneumatic regulators |
| Compatibility Note |
Used in mechanical back‑pressure regulators (per parts list) |
Compatible Systems
- Graco Mechanical Back‑Pressure Regulators (e.g., models listed in Graco parts manuals)
- Graco Pump Lower Assemblies requiring chemical-resistant and wear‑resistant packing
Installation
To install the Graco 15A185 Packing correctly:
- Depressurize and fully drain the system before disassembly.
- Remove the old packing carefully, avoiding damage to mating surfaces.
- Clean the packing chamber thoroughly to remove debris and old material.
- Insert the new PTFE/carbon packing, making sure it sits evenly and square.
- Reassemble the housing, ensuring proper alignment of all components.
- Tighten bolts or glands to the recommended torque, then run a low-pressure test to confirm sealing.
Maintenance Advice
- Inspect packing whenever the pump or regulator is serviced.
- Look for signs of wear, extrusion, or degradation of the PTFE / carbon material.
- Replace packing proactively if leakage or performance issues arise.
- Use compatible lubricants or assembly fluids as recommended by Graco.
Frequently Asked Questions
The carbon reinforcement improves wear resistance and dimensional stability, while PTFE provides excellent chemical compatibility and low friction — making the seal both durable and efficient.
Yes, the 15A185 is a genuine Graco part, built to Graco’s exact specifications for reliable performance.
This packing is listed in Graco mechanical back‑pressure regulator parts lists and is used in high-pressure pump assemblies.
Inspect the packing during regular maintenance. Replace if you see signs of wear, leakage, or extrusion to maintain performance and prevent failures.
