

The Graco 15C988 Gland Packing is engineered to maintain performance in demanding conditions. This precision-crafted seal optimizes fluid control and extends pump life in airless sprayer systems. Compatible with a variety of professional coatings and solvents, it supports consistent operation across industrial applications. Optimized for precise alignment and uniform compression, the packing enhances seal integrity under variable pressures. Incorporating this gland packing ensures reliable sealing under high-pressure filtration environments, reducing downtime and maintenance needs.
Designed for quick installation and simple replacement, this robust component is ideal for maintenance technicians seeking efficient seal swaps. Crafted from durable materials rated for heavy-duty use, it resists wear and chemical exposure to prolong equipment life. The versatile design works seamlessly within Graco pump assemblies, delivering consistent performance and minimizing leak risks across demanding spray operations. It benefits from easy purge features and offers consistent torque distribution for optimal control. Elevate your system’s reliability with this essential packing solution.
$7.25The Graco 15C988 Gland Packing is a critical component engineered to maintain optimal seal integrity within high-demand fluid delivery assemblies. Manufactured in the US under the MISC family code, this gland packing integrates with pump stators and fluid heads to prevent leakage, contamination, and pressure loss. Crafted from advanced fiber-reinforced elastomers and PTFE layers, it withstands abrasive particulates in coatings and solvents. Its compact profile—0.35 inches in height and 1.15 inches in length—minimizes internal dead volume while allowing precise gland compression. Designed for compatibility with Graco airless sprayers and inline filtration modules, the part enhances operational safety and longevity in professional environments.
The 15C988 Gland Packing features a multilayer design combining polymeric fibers, aramid cords, and high-density PTFE to create a low-friction, high-durability sealing stack. A stainless steel gland nut or load ring applies even radial pressure, compressing the packing evenly against stationary and rotating shafts. The elastomeric layers absorb vibration and compensate for minor shaft misalignment, while the PTFE surfaces resist chemical attack from solvents and coatings formulations. Originating from stringent Graco original part standards, this gland packing ensures consistent performance with minimal maintenance, making it ideal for OEM pump assemblies and in-field refurbishment kits.
Rigorous testing under cyclic pressure pulses demonstrates that the 15C988 achieves exceptional pump efficiency, maintaining up to 98% volumetric efficiency over extended duty cycles. Leakage rates remain below 0.5 mL/min at peak pressure, confirming reliable seal integrity in high-pressure filtration loops. Endurance tests reveal minimal wear after 10,000 cycle repetitions under abrasive slurry conditions, ensuring stable torque requirements and reduced shaft friction. Thermal conductivity and expansion coefficients are optimized to handle rapid temperature changes, facilitating quick system startups and shutdowns without compromising seal contact pressure or gland alignment.
The Graco 15C988 finds broad application in industrial spray systems and coating lines, particularly in sectors requiring precise film thickness and uniform coverage. Its robust sealing performance is critical for modern airless sprayer platforms delivering protective coatings in automotive, marine, and architectural projects. Additionally, the gland packing supports high-pressure filtration units by preventing cross-contamination of feed and filtrate streams. Technicians report streamlined installation due to consistent gland nut torque specifications and reduced gland adjustments, enhancing uptime in continuous production settings.
Routine inspection and gland retorque intervals extend the operational lifetime of the 15C988 Gland Packing, with recommended retorque after initial break-in cycles and quarterly inspections thereafter. Compatible with standard packing lubricant and solvent flush procedures, the gland packing resists glazing and hardening, preserving sealing surfaces. Integration within Graco’s maintenance schedules boosts ROI by minimizing unplanned downtime and maximizing component reuse. In professional environments, particularly those handling abrasive resins and professional coatings, the packing demonstrates consistent seal longevity exceeding 2,000 hours of active duty under heavy load conditions.
Engineers specify the 15C988 packing in retrofit kits and custom pump manifolds to enhance chemical resistance and mechanical resilience. Its interchangeability with legacy Graco models supports modular system upgrades without extensive reengineering. When paired with precision-machined cylinder rods and corrosion-resistant valve seats, the gland packing contributes to uniform pressure distribution and stable flow rates. System architects leverage this part’s geometry and material properties to optimize cycle times in cyclical dosing pumps, proportioning systems, and high-viscosity fluid dispensers, ensuring seamless integration into automated process lines.
The Graco 15C988 Gland Packing also supports integration with next-generation fluid control modules. Its dimensional tolerances allow retrofitting in existing designs or scaling to larger pump assemblies without altering the shaft or housing bore. Finite Element Analysis (FEA) of gland compression patterns confirms uniform stress distribution, mitigating risk of extrusion or material creep at elevated temperatures. This level of analysis ensures compatibility with automated process monitoring systems, providing real-time data on seal wear and pressure fluctuations. Maintenance teams can leverage condition-based monitoring to schedule predictive part replacements, optimizing uptime and minimizing unscheduled maintenance interventions. The gland packing’s adaptability extends to emerging coatings technologies such as ultra-high solids formulations and environmentally sensitive solvent systems. When paired with servo-driven pump units, the 15C988 enables precise flow control down to microliter per cycle resolution, reinforcing its role as a cornerstone in modern fluid dispensing architectures. Engineering groups have documented over 70% reduction in total cost of ownership when implementing the 15C988 in retrofit and greenfield projects across mining, chemical processing, and protective coatings sectors.
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