Graco 15C997 Backup Washer Piston Valve
$5.25
Available to Order
The Graco 15C997 Backup Washer provides secondary sealing in piston-valve assemblies, preventing leaks and supporting smooth pump operation.
- Supports primary piston-valve seal
- OEM quality for reliable performance
- Durable polymer material
- Easy to replace during maintenance
Quantity
Genuine OEM Part
Fast Shipping (Order by 1 PM CST)
Easy Returns
Graco 15C997 Backup Washer – Description & Role
The Graco 15C997 is a backup washer used in the piston-valve assembly of Graco displacement pumps. It provides a secondary sealing surface that supports the main valve components, helping maintain fluid control and preventing leakage.
Specifications
| Part Number | 15C997 |
|---|---|
| Type | Backup washer for piston valve |
| Function | Acts as secondary seal in valve |
| Material | Durable polymer / elastomeric washer |
| Where Used | In piston‑valve seats of Graco pumps |
| Included In | Graco repair / packing kits |
Key Features
- Secondary sealing: Supports primary valve seal
- OEM integrity: Designed by Graco for exact fit
- Durable build: Withstands repeated piston cycles
- Easy to replace: Small, low‑complexity part
Installation Notes
- Disassemble valve to access old washer
- Remove the worn backup washer carefully
- Clean seating surface before installing new part
- Install new 15C997 washer in proper orientation
- Reassemble piston‑valve components and test for leaks
Frequently Asked Questions
It provides a secondary seal in the piston‑valve to help prevent fluid leakage and protect the primary seal.
Reusing a worn washer is not recommended. A new 15C997 ensures proper sealing and durability.
Inspect the washer whenever you perform a piston‑valve rebuild or notice valve leakage or performance loss.
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