Graco 15A186 PTFE with Carbon Packing – Robust OEM Seal
The Graco 15A186 PTFE with Carbon Packing is a high-performance OEM seal tailored for Graco pump or regulator assemblies. By blending chemical-resistant PTFE with wear-resistant carbon, this packing offers excellent durability, sealing strength, and low friction.
Product Overview
This packing combines the best of both materials: PTFE provides outstanding chemical compatibility and smooth sliding, while the infused carbon reinforces structural integrity to stand up under repeated pressure cycles. It forms a reliable seal in dynamic environments, minimizing leakage and improving the longevity of the pump or regulator unit.
Key Features
- Genuine Graco OEM part — Part Number: 15A186
- Hybrid PTFE‑carbon construction for chemical resistance and mechanical strength
- Low-friction surface reduces internal wear and increases efficiency
- Designed to withstand high-pressure cycles and aggressive operating conditions
- Extended service life compared to conventional packing materials
Technical Specifications
| Part Number |
15A186 |
| Material |
PTFE (Teflon) with Carbon Fill |
| Function |
Packing / Seal for pumps or regulators |
| Typical Application |
High-pressure Graco pumps and mechanical regulator assemblies |
| Weight (Approx.) |
~0.045 lb |
Compatible Systems
- Graco mechanical back-pressure regulators
- Graco pump lower assemblies requiring a chemical‑resistant seal
Installation
To install the Graco 15A186 Packing correctly:
- Ensure the system is fully depressurized and drained.
- Remove the old packing carefully without damaging mating surfaces.
- Clean the packing chamber thoroughly to remove any residue.
- Insert the new PTFE/carbon packing so it sits square and evenly.
- Reassemble the housing components, making sure everything is aligned.
- Tighten fasteners per manufacturer torque specs, then run a low-pressure test to verify the seal.
Maintenance Tips
- Inspect packing during routine maintenance or when leakage appears.
- Look for signs of extrusion, wear, or material degradation.
- Replace if performance drops or leakage begins, to avoid larger failures.
- Use recommended lubricants/assembly fluids when replacing packing to enhance lifespan.
Frequently Asked Questions
The carbon reinforcement adds wear resistance and enhances dimensional stability, while PTFE ensures excellent chemical compatibility and low friction — giving you both durability and reliability.
Yes, the 15A186 is an authentic Graco OEM packing designed to meet Graco’s quality and performance standards.
It is commonly used in Graco mechanical back-pressure regulators and pump lower assemblies where a high-durability seal is required.
Inspect the packing during regular maintenance. Replace it when signs of wear, leakage, or extrusion appear to maintain optimal performance.
