Graco 181978 Piston Seal
$85.00
Available to Order
The Graco 181978 Piston Seal is a premium OEM seal that prevents fluid bypass and maintains consistent pressure within pump cylinders.
- UHMWPE piston seal
- Prevents fluid bypass
- Fits Graco 400‑series pumps
- Improves pressure stability
- OEM quality material
- Durable & chemical resistant
Quantity
Genuine OEM Part
Fast Shipping (Order by 1 PM CST)
Easy Returns
Compatible Machines for Graco 181978 Piston Seal
- Graco “Glutton” 400‑series air‑powered pumps
- High‑pressure industrial fluid pumps
- Professional coating & transfer systems
- Pump rebuild applications
Product Overview
The Graco 181978 Piston Seal is a genuine OEM UHMWPE seal engineered to prevent fluid bypass in pump cylinders, ensuring smooth piston travel and consistent pressure delivery.
Key Features
| Part Number | 181978 |
|---|---|
| Type | Piston seal |
| Material | UHMWPE (Ultra‑High Molecular Weight Polyethylene) |
| Function | Seals piston to prevent fluid bypass |
Benefits
- Improves pressure retention
- Reduces fluid bypass around piston
- Durable chemical‑resistant material
- OEM quality performance
Frequently Asked Questions
It prevents fluid from bypassing the piston, ensuring smooth, efficient pump cycles.
Yes, it’s a genuine Graco OEM piston seal.
Replace when worn or pump performance drops.
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