The Graco 122669 Flat Washer is engineered for seamless integration with airless sprayer equipment, delivering reliable performance in demanding painting applications. This premium-grade washer fits precisely within spray gun assemblies, ensuring optimal fluid control. Technicians rely on its robust construction to maintain consistent operation under rigorous conditions. By incorporating advanced manufacturing techniques, the washer minimizes downtime and maximizes equipment lifespan, making it an essential accessory for contractors who require dependable results on every jobsite.
In installation with professional coatings systems, the Flat Washer optimizes seal integrity, preventing leaks during high-pressure filtration processes. Its corrosion-resistant finish withstands harsh chemicals and abrasive materials, safeguarding critical components in industrial spraying setups. Compatible with a wide range of Graco gun models, this OEM replacement part upholds strict quality standards, ensuring consistent spray patterns and finish quality. Elevate your workflow with this meticulously crafted washer, tailored for peak performance in both commercial and residential applications.
$6.3The Graco 122669 Flat Washer is an extra-thick sealing component engineered to meet the stringent demands of high-intensity pump assemblies and fluid delivery modules. Manufactured to OEM specifications, this flat washer serves as a critical load-spreading and sealing element between flanges, retaining rings, and high-pressure adapters. Its robust geometry minimizes deformation under compressive stress, ensuring consistent gap control and reliable torque retention. Ideal for integration into spray equipment and diaphragm pump systems, the 122669 washer excels in applications requiring precise axial stiffness and uniform contact pressures across mating surfaces.
When installed within an airless paint sprayer manifold, the Graco 122669 Flat Washer provides an impervious barrier against fluid bypass while preserving precise alignment of mating components. Its design contributes directly to enhanced pump efficiency by reducing volumetric losses caused by seal wear over extended operational cycles. The washer’s uniform thickness profile helps maintain fluid film consistency under cyclical pressure fluctuations, making it a preferred choice for heavy-duty sprayers and industrial metering pumps that demand uninterrupted material flow.
Each washer is fabricated from Type 316L stainless steel, selected for its superior corrosion resistance in aggressive coatings and solvent environments. The low-carbon 316L alloy ensures minimal carbide precipitation during welding or high-temperature exposure, which is critical for maintaining chemical purity in coatings equipment. Surfaces undergo precision grinding to achieve RoHS-compliant finishes with Ra values under 0.4 µin, eliminating micro-crevices that could trap particulate matter. Edges are chamfered to 15° on both O.D. and I.D. to facilitate insertion into assembled housings without damaging elastomeric seals.
Strict dimensional control is upheld through CNC turning and centerless grinding processes, achieving flatness within 0.0005 in and thickness variation under 0.0002 in. Hardness is verified at 32 HRC via Rockwell testing to ensure resistance to indentation and galling under contact pressures exceeding 10,000 psi. Concentric runout is maintained below 0.001 in for dynamic pump applications. In high-pressure filtration setups, this flat washer supports consistent filter packing compression and prevents bypass channels that could compromise particulate retention in critical fluid streams, contributing to improved high-pressure filtration performance.
The extra-thick geometry of the 122669 washer is optimized for use in diaphragm pumps, piston pumps, and rotary spray systems that convey professional coatings such as polyurethanes, epoxies, and high solids enamels. By distributing clamp loads over a larger surface area, it reduces stress concentrations on weaker gasket materials, extending component life and enhancing overall seal longevity. Integration into modular pump heads is facilitated by tight O.D. fits, which eliminate lateral play and maintain concentricity of fluid passages. The washer also functions as a sacrificial wear surface, preserving more expensive mating components from abrasive or corrosive media.
For optimal performance, inspect each washer prior to installation and replace at the first indication of surface abrasion or loss of flatness. Clean with low-residue solvents and lint-free wipes to prevent embedded particulates that could abrade seals. When reassembling high-pressure pump units, apply a calibrated torque sequence to achieve uniform compression and verify preload values with a digital torque wrench. Routine monitoring of discharge pressure curves can reveal early signs of washer degradation. Proper maintenance ensures extended operational cycles, stable flow rates, and consistent component life in demanding industrial coating and fluid delivery systems.
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