Graco 331025 Belleville Spring Washer

Compatible Machines

• Graco airless sprayers with serviceable fluid pump packing assemblies
• Graco industrial fluid pump systems using Belleville spring stacks
• Graco contractor-grade spray equipment with internal preload washers

Graco 331025 Washer, Spring Belleville

The Graco 331025 Washer, Spring Belleville is a precision-engineered conical spring washer designed to maintain consistent preload and tension inside Graco pump and fluid handling assemblies. Its spring-loaded disc shape helps absorb vibration, compensate for wear, and keep critical fasteners secure during operation.

This washer is commonly installed within pump packing stacks or compression assemblies where maintaining controlled pressure is essential for reliable sealing and long service life.

Key Functions

• Provides spring tension to maintain consistent preload
• Helps prevent loosening caused by vibration or pressure changes
• Supports stable pump performance and extended seal life
• Compact design suitable for tight internal assemblies

Technical Overview

Frequently Asked Questions