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Graco 115146 U-Cup Seal

The Graco 115146 U‑Cup Seal is a precision O‑ring style sealing component used in Graco pumps and spray systems to ensure fluid‑tight piston or rod sealing — ideal for high‑pressure fluid transfer or coating applications.

  • OEM U‑Cup seal for Graco fluid and spray equipment
  • Seals piston/rod assemblies inside pumps — prevents leaks
  • Used in industrial coating, painting or fluid‑handling systems
  • Essential for maintenance or replacement to keep performance & pressure intact

Retail Price: $58.25
You save: $0.58 (1.00%)
Our Price: $57.67
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About the Graco 115146 U‑Cup Seal

The Graco 115146 U‑Cup Seal is a genuine OEM fluid‑seal designed to provide reliable piston/rod sealing in Graco pumps, spray systems and fluid‑handling equipment — ensuring leak‑proof operation under pressure.

Compatible Assemblies / Use‑Cases

  • Graco fluid pumps or displacement‑pumps using piston/rod assemblies sealed by U‑Cup
  • Spray, coating or paint‑delivery systems where internal fluid‑seal is required for correct operation
  • Industrial coating and fluid‑handling equipment under Graco requiring high‑pressure fluid sealing
  • Maintenance or overhaul of pumps when original U‑Cup seal is worn or leaking — 115146 as OEM replacement

Product Details

Part Number 115146
Description U‑Cup Seal / Piston or Rod Seal — OEM Seal
Function Seals internal fluid chambers by preventing fluid leakage around piston or rod in pump assemblies
Typical Use Fluid pumps, displacement‑pumps, spray/coating pumps and fluid‑handling systems
OEM Status Original Graco spare part — ensures correct dimension, material and sealing performance

Why Use This U‑Cup Seal?

  • Ensures reliable fluid‑tight sealing of pistons/rods under pressure
  • OEM‑specified — correct fit and tolerance for Graco housings
  • Reduces risk of leaks, maintains system pressure and fluid integrity
  • Essential replacement when original seal wears out or leaks

Frequently Asked Questions

It seals around the piston or rod inside the pump housing — preventing fluid from leaking past the piston during operation and maintaining pressure integrity.

Yes — 115146 is listed as a genuine Graco‑manufactured U‑Cup seal in official spare‑parts catalogs. :contentReference[oaicite:7]{index=7}

Replace it when you notice leaks, loss of pressure, poor pump performance or during regular maintenance/overhaul of the pump — to ensure continued fluid‑tight sealing.

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