Graco 15G198 Nut Packing 4 GPM

Compatible Machines for the 15G198 Nut Packing (4 GPM)

• Graco GH-833 Displacement Pump
• Graco 287834 (4 GPM) Displacement Pump
• Graco ProContractor Series Pumps – 4 GPM Models
• Graco 5900 / XM7000 Pump Assemblies (4 GPM Flow Band)

Product Overview

The 15G198 Nut Packing is a precision-engineered sealing component designed for high-pressure airless sprayer systems rated at 4 GPM. It ensures reliable sealing around the pump rod assembly, minimizing wear and maintaining consistent fluid delivery in demanding coating environments.

Key Features

Materials & Performance

Manufactured from corrosion-resistant stainless steel or a hardened brass alloy, this nut packing provides durable service life even in high-abuse environments. It features precision-machined threads for reliable integration and a sealing surface engineered to resist abrasion, chemical exposure and high-temperature coating cycles.

Installation & Maintenance

• Install using a calibrated torque tool to ensure correct preload without thread damage.
• Inspect sealing surfaces and threads periodically for wear, scoring or material build-up.
• Replace if radial play, leakage or reduced pump efficiency is observed.
• Maintain proper filtration and fluid cleanliness upstream to extend service intervals.

Applications

This part is ideally suited for professional-grade coating systems in industrial, automotive and manufacturing settings. It supports high-volume paint jobs, solvent or water-based formulations and abrasive or high-viscosity coatings where consistent sealing and fluid integrity are critical.

Frequently Asked Questions