Graco 103185 O-Ring Packing
$21.10
In Stock
The Graco 103185 Packing O-Ring is a genuine polyurethane seal designed for high-pressure valve needles. Ensures leak-free performance and consistent spray output.
- Fits valves 832503 & 947994
- Used in color-change and dump-valve assemblies
- OEM-grade polyurethane for durability under pressure
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Function & Fitment Guide for Graco 103185 Packing O-Ring
Compatible Machines / Assemblies
- High-Pressure Color Change Valve – Model 832503 (Series B)
- High-Pressure Dump Valve – Model 947994 (Series B)
- Color Change Manifolds – Models 907345–907350 (when equipped with valve 832503)
What is the Graco 103185 Packing O-Ring?
The 103185 O-Ring is an OEM polyurethane sealing ring used on the valve needle inside specific Graco high-pressure valves. It prevents fluid bypass along the needle, helping maintain system pressure and leak-free operation in color-change and dump-valve applications.
Key Features
- OEM genuine part for precise fit and durability.
- Polyurethane material designed for high-pressure coating systems.
- Critical seal for valve needle performance in 832503 and 947994.
- Ideal for preventative maintenance and valve rebuilds.
Product Specifications
| Part Number | 103185 |
|---|---|
| Part Type | Packing, O-Ring (valve needle seal) |
| Material | Polyurethane |
| Primary Use | Needle seal in High-Pressure Color Change and Dump Valves |
| Associated Components | Valve needle & backup ring (inspect during service) |
Installation & Maintenance Notes
- Follow full system pressure-relief procedures before disassembly.
- Lightly lubricate the new O-ring and seat it in the needle groove without twisting.
- Inspect the backup ring, valve needle, seat, and housings; replace worn parts.
- After reassembly, perform a low-pressure leak check, then ramp to operating pressure.
Fitment Verification Tips
- Confirm your system uses valve 832503 or 947994 (Series B) or a manifold listed above.
- Match the O-ring callout (103185) in your unit’s parts diagram or service manual.
Frequently Asked Questions
This O-ring fits the valve assemblies listed above. If your sprayer uses valve 832503 or 947994, then 103185 applies. Check your sprayer’s valve part number in its parts manual to confirm.
Visible leaks at the valve, pressure drop, erratic color-change operation, or difficulty holding pressure under load suggest the needle O-ring is worn or damaged.
For high-pressure valves, tolerances and materials matter. Use the OEM 103185 to ensure proper fit, sealing, and longevity.
Inspect and replace as needed the backup ring, the valve needle/seat, and seals in the fluid and actuator housings during the same service interval.
The associated high-pressure valves commonly specify up to 3,000 psi fluid working pressure; always verify your exact model’s ratings.
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