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Graco 115623 Belleville Washer

The Graco 115623 Belleville Washer is a conical spring‑washer that keeps joints tight under vibration or fluid pressure — preventing bolts loosening and ensuring stable spray/pump operation.

  • Conical disc‑spring washer (OEM‑grade)
  • Maintains bolt preload under pressure, vibration or thermal cycling
  • Better than flat washers for high‑load & dynamic applications

$12.2

Product has been Discontinued by Manufacturer

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Compatible Applications for Graco 115623 Belleville Washer

The Graco 115623 Belleville Washer is a factory-specified disc-spring washer (conical spring washer) designed to maintain bolt preload and resist loosening under pressure, vibration, or thermal cycling — ensuring secure joints and reliable performance in spray and pump systems.

  • Graco pumps and sprayer assemblies where bolts/joints face fluid-pressure or vibration loads
  • Bolted connections in fluid-handling, airless spray, or coating equipment requiring vibration and thermal stability
  • Any Graco module specifying 115623 washer in parts-diagram to maintain secure fastening under dynamic loads

Frequently Asked Questions

Because a Belleville washer acts like a spring-washer: under load it maintains tension, compensates for thermal expansion or vibration, and prevents bolts from loosening — something a flat washer cannot do as effectively.

Yes — disc-springs like Belleville washers can be stacked in series or parallel to modify spring-rate, preload and deflection-characteristics depending on load and application requirements.

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