Graco 115251 Seal U-Cup
$318.00
In Stock
The Graco 115251 U‑Cup Seal is a factory‑specified internal seal used inside pump or cylinder assemblies — sealing piston or rod to prevent fluid leaks and ensure stable pressure and fluid flow.
- OEM U‑Cup seal for Graco pumps and fluid systems
- Seals piston/rod to cylinder — prevents leaks and fluid blow‑by
- Used in spray, paint, coating or fluid‑delivery pumps and systems
- Essential for maintenance or replacement when original seal is degraded or leaking
Quantity
Genuine OEM Part
Fast Shipping (Order by 1 PM CST)
Easy Returns
About the Graco 115251 U-Cup Seal
The Graco 115251 U-Cup Seal is an OEM-specified fluid-seal used to seal piston or rod assemblies inside cylinders of Graco pumps and fluid-handling equipment — ensuring leak-proof operation under pressure.
Compatible Assemblies / Use-Cases
- Graco pump assemblies, displacement pumps or fluid-handling systems using piston/rod + cylinder mechanism
- Spray, paint or coating systems requiring internal fluid-sealing to maintain pressure and avoid blow-by
- Any Graco equipment whose parts diagram or service manual specifies “Seal, U-Cup – 115251”
- Maintenance or rebuild work — replacing worn, damaged, or leaking seals with correct OEM-grade U-Cup seal for reliable performance
Product Details
| Part Number | 115251 |
|---|---|
| Description | U-Cup Seal / Internal Pump Seal (OEM) |
| Function | Seals piston/rod to cylinder — prevents fluid leakage, blow-by or pressure loss |
| Typical Use | Pumps, fluid cylinders, displacement pumps, spray/coating fluid-handling systems |
| OEM Status | Genuine Graco part — ensures correct fitment, sealing performance and compatibility with Graco housings |
Why Use This U-Cup Seal?
- Provides reliable fluid-tight sealing inside pump or cylinder — prevents leaks and blow-by
- Maintains proper pressure and fluid delivery performance in spray, paint or coating systems
- OEM-specified — correct dimension, material, and compatibility with Graco assemblies
- Essential for maintenance or rebuilds when original seals degrade or fail, to restore original performance
Frequently Asked Questions
It seals the piston or rod inside the fluid-cylinder, preventing fluid from leaking past the piston and ensuring consistent pressure and fluid delivery.
Yes — 115251 is listed among official Graco U-Cup seals in parts-catalogs and spare-parts lists.
Replace the seal if you notice fluid leakage, loss of pressure, inconsistent spray or pump performance — or during regular maintenance / overhaul to restore proper sealing.
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