Titan 700-603A Upper Packing Assembly
OEM Titan Fluid Section Seal
Titan 700-603A Upper Packing Assembly is a genuine OEM seal component that creates a pressure-tight barrier around the piston rod in the upper fluid section of compatible Titan airless sprayers, preventing fluid leaks and maintaining pump pressure.
Compatibility Overview
Replace if fluid leaks from the upper packing area, pump pressure is lost, or during a routine repacking service. Always verify if your specific model uses this part or the updated 700-072 replacement.
Titan Fluid Section Seal Replacement
Titan 700-603A Upper Packing Assembly for Airless Sprayer Pump Service
Titan 700-603A is a genuine OEM upper packing assembly engineered to seal the piston rod in the upper fluid section of compatible Titan airless sprayers. This precision packing set creates a pressure-tight barrier that prevents coating material from leaking past the piston rod during the pump's upstroke. The "V" style packings are oriented with the peak facing upward toward the motor, ensuring proper sealing under pressure. A worn upper packing causes fluid to leak from the packing area, loss of pump pressure, and reduced spray performance. Replacing this assembly during a routine repack restores the pump's ability to build and maintain pressure.
| Detail | Technical / Commercial Information |
|---|---|
| Product Overview | Genuine Titan OEM upper packing assembly for compatible airless sprayers. Creates a pressure-tight seal around the piston rod in the upper fluid section. |
| Function | Seals the piston rod as it moves through the upper pump block. Prevents fluid from bypassing the piston rod during the pressure stroke. The "V" packings must be installed with the peak pointing upward toward the motor for proper sealing. |
| Compatible Titan Models | 330, 440XC, 550XC, 660XC, 690GXC; Epic 440E, 447EX, 447HPX, 660HPX, 690GX, 690HPG; Performer 640I; PowrLiner 3100; GPX 80 Gas Piston Pump. |
| OEM Part Number | 700-603A Upper Packing Assembly (Packaged). |
| Important Fitment Note | Some references indicate that for certain models (such as the Epic 690 GX), the upper packing may have been superseded by part 700-072. Always verify the correct part number for your specific sprayer model and serial number using the official parts diagram before ordering. |
| Replacement Indicators | Fluid leaking from the upper packing area; loss of pump pressure; pump struggles to maintain prime; visible wear or damage to packings during disassembly; routine repacking service interval reached. |
| Related Parts Commonly Serviced Together | Lower packing assembly (700-601A), pump repacking kit (704-113), piston rod (704-551A or 704-560 assembly), upper packing spring, and packing grease. |
| Common Problems Solved | Restores proper pump pressure, eliminates fluid leaks from the upper packing, resolves priming and pressure retention issues, and extends the service life of the fluid section. |
| Why Genuine OEM | Exact dimensions, material composition, and "V" orientation ensure proper sealing and durability. A low quality or incorrectly installed packing will fail to seal, leading to continued pressure loss and potential damage to the piston rod. |
During a repack, always inspect the piston rod for scoring or wear; a damaged rod will quickly destroy new packings. Install the upper packing set with the peak of the "V" pointing upward toward the motor. Lubricate the packings with compatible grease before assembly. Follow the fluid section disassembly and reassembly procedure in your sprayer's service manual. Always relieve system pressure and disconnect power before servicing.
Frequently Asked Questions
Quick answers for confirming fitment and identifying when replacement is needed.
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