The Graco 100068 Washer Lock Spring is an essential component for professional-grade airless sprayers. Designed for use with a high-pressure airless spray machine, this lock spring washer ensures consistent pump performance and optimal seal integrity, delivering smooth application of professional coatings across various surfaces. Technicians trust this part to enhance equipment longevity and reduce downtime, maintaining precision in every project.
Built to withstand demanding conditions, this washer lock spring maintains its form under continuous cycles, supporting reliability throughout extensive use. Its corrosion-resistant profile contributes to reduced maintenance for contractors who rely on consistent output from their airless paint sprayer accessories. Engineered to integrate with advanced piston assemblies, it plays a crucial role in the high-pressure filtration process, ensuring contaminant-free performance. Upgrade your sprayer setup with a part that meets rigorous standards and delivers superior results.
$8.6The Graco 100068 Washer Lock Spring is a critical component in advanced fluid delivery systems, designed to maintain consistent preload and secure sealing under extreme operating conditions. Leveraging principles of mechanical engineering and materials science, this washer-spring hybrid integrates seamlessly with modern airless sprayer configurations to support stable fluid pressurization, minimize volumetric slip, and extend service intervals. When paired with professional coatings workflows, its precise geometry and surface integrity contribute directly to improved atomization uniformity and reduced overspray. Optimized for compatibility with a wide array of Graco pump modules, it enhances pump efficiency by stabilizing axial loads and reducing dynamic deflection during rapid cycle rates.
The washer lock spring’s design features a conical washer geometry mated to a multi-coil compression spring. This configuration creates a controlled spring rate that compensates for thermal expansion and pressure fluctuations, ensuring long-term seal integrity. By tailoring the coil pitch and washer bevel angle, this part achieves a stable load distribution that enhances seal longevity, even in the presence of aggressive coatings materials. The integrated assembly resists back-off under cyclic loading, making it indispensable for high-repetition industrial applications such as automated spray booths and continuous production lines.
Manufactured from AISI 17-4PH stainless steel with a minimum Rockwell hardness of HRC 38, the Graco 100068 Washer Lock Spring delivers superior mechanical strength and chemical resistance. The electroless nickel plating process deposits a uniform 10–15 µm layer that enhances wear resistance and mitigates galvanic corrosion when in contact with dissimilar substrates. This plating also promotes a low-coefficient surface finish, reducing friction during installation and service. Rigorous metallurgical analysis ensures grain structure consistency and absence of intermetallic segregation, preventing premature fatigue cracking in high-pressure filtration systems.
Engineered for operating pressures up to 5,000 psi, this lock spring washer exhibits a spring constant calibrated to maintain preload within ±3 % of the nominal value throughout temperature ranges from –20 °C to 80 °C. It has been validated in endurance tests exceeding one million cycles without measurable loss of clamping force. In conjunction with the Graco 395 sprayer line, it ensures reliable performance in demanding high-flow applications and supports optimized atomization when using graco spray tips. Key performance metrics include minimal axial deflection (<0.02 mm under full load) and negligible hysteresis during rapid actuation, making it an essential part for systems requiring precise fluid metering.
Proper installation of the 100068 Washer Lock Spring involves a calibrated torque sequence and clean mating surfaces to ensure consistent preload and avoid micro-movements that can compromise seal longevity. When servicing equipment in rugged industrial zones such as drum cage texas environments, operators should inspect the spring curvature and washer flatness after every 500 service hours. Integration with the graco 395 sprayer demands adherence to manufacturer guidelines for pump head alignment and fluid compatibility to prevent premature wear. Periodic cleaning with low-ionic detergents and reapplication of PTFE-based lubricants will prolong component life and maintain optimal pump efficiency.
Collectively, the Graco 100068 Washer Lock Spring exemplifies precision engineering tailored to the rigorous demands of professional coatings and high-pressure filtration systems. Its balanced combination of material science, mechanical performance, and practical maintenance recommendations makes it a vital spare part for industrial airless sprayer assemblies and fluid management infrastructure.
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