Graco 189439 Seat, Piston, Sst
Stainless steel piston seat designed for Graco Dura-Flo 1800 lower assemblies, helping maintain reliable sealing performance and consistent fluid pressure in high-demand pump systems.
- Genuine Graco part number 189439
- Stainless steel construction for corrosion resistance
- Compatible with Dura-Flo 1800 pump systems
- Designed for select 290 cc lower units
- Supports accurate piston sealing and fluid control
Piston Sealing Performance & Pump Compatibility
Compatible Machines
| Compatible Equipment | Series / Type |
|---|---|
| Graco Dura-Flo 1800 | 290 cc Lower Units |
| Lower Part No. 222801 | Dura-Flo 1800 |
| Lower Part No. 222802 | Dura-Flo 1800 |
| Lower Part No. 222803 | Dura-Flo 1800 |
| Lower Part No. 222804 | Dura-Flo 1800 |
| Lower Part No. 222805 | Dura-Flo 1800 |
| Lower Part No. 222806 | Dura-Flo 1800 |
What Is the Graco 189439 Seat, Piston, SST?
The Graco 189439 Seat, Piston, SST is a genuine OEM replacement component used in Graco Dura-Flo 1800 lower pump assemblies. This precision-machined piston seat plays a critical role in sealing performance and fluid control during pump operation.
Constructed from durable stainless steel (SST), the component is designed to withstand demanding industrial environments while helping maintain consistent pressure and efficient fluid transfer in high-pressure coating and pumping systems.
Engineered to original Graco specifications, the piston seat supports proper sealing contact within the piston assembly, reducing wear and contributing to reliable long-term pump performance.
Key Features
- Genuine Graco OEM piston seat component
- Stainless steel (SST) construction for durability
- Designed for Dura-Flo 1800 lower assemblies
- Supports proper piston sealing and fluid control
- Compatible with multiple 290 cc lower units
- Precision-machined for dependable fit and pump performance
Frequently Asked Questions
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