

OEM packing nut designed to maintain proper sealing pressure and reliable pump performance in Graco fluid handling systems.
| Machine / Equipment Type | Compatibility Details |
|---|---|
| Graco Reactor Systems | Compatible with select Graco Reactor spray foam and polyurea systems requiring OEM packing nut components. |
| Graco Pump Assemblies | Used in compatible Graco fluid pump assemblies to maintain proper packing compression and sealing performance. |
| Industrial Fluid Handling Equipment | Suitable for high-pressure fluid transfer systems using Graco OEM sealing components. |
| OEM Graco Service Replacements | Designed as a direct OEM replacement for approved Graco equipment configurations. |
The Graco 17S991 Nut, Packing is a genuine OEM replacement component engineered to secure and maintain packing assemblies in Graco fluid handling equipment. This precision-machined packing nut helps ensure proper sealing pressure within pump systems, supporting efficient operation while reducing the risk of leaks and premature component wear.
Designed for demanding industrial applications, the packing nut plays a critical role in maintaining pump performance and extending equipment service life. Its durable construction supports reliable operation in spray foam, coating, and high-pressure fluid transfer systems.
This packing nut is commonly used in Graco pump assemblies, spray foam systems, coating equipment, and industrial fluid handling applications where maintaining proper sealing pressure is essential for system performance and reliability.