Graco 103337 O-Ring Packing
$7.75
In Stock
The Graco 103337 O-Ring Packing provides a precise seal for Graco spray and flow guns, preventing leaks and maintaining consistent spray pressure.
- OEM Graco replacement part
- Used in GX-7, GX-7 DI, GX-7 400, and 12005 Flow Gun
- Durable, chemical-resistant material
- Ensures proper seal and spray performance
Quantity
Genuine OEM Part
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Seal & Packing Details for OEM Part #103337
Compatible Machines
- Graco GX-7 Spray Gun
- Graco GX-7 DI
- Graco GX-7 400
- Graco 12005 Flow Gun (packing-nut assembly)
Overview
The Graco 103337 O-Ring Packing is an OEM sealing ring used in select Graco spray/flow guns. Positioned within the packing-nut area, it helps maintain a reliable seal around the needle/rod to prevent material or air leakage and to support consistent triggering and spray performance.
Engineered for durability and chemical resistance, this O-Ring Packing is specified by Graco for GX-7 family guns and certain flow-gun assemblies. For best results, inspect mating surfaces and replace worn packings during routine maintenance.
Key Details
| Part Number | 103337 |
|---|---|
| Part Type | O-Ring Packing (seal) |
| Function | Seals packing/needle area to minimize leaks and maintain pressure integrity. |
| Common Assemblies | Packing-nut / needle seal region on GX-7 series and select flow guns. |
| Contents | 1 × O-Ring Packing (OEM replacement) |
| Compatibility Note | Fits specific models listed above; verify against your equipment’s parts manual. |
Install & Care Tips
- Clean the groove and adjacent surfaces; remove debris or cured material before seating the new O-Ring.
- Lightly lubricate with a manufacturer-approved lubricant to avoid nicks during assembly.
- Do not over-tighten the packing nut; follow torque guidance from the Graco manual.
- Inspect periodically for flattening, cuts, or chemical swelling and replace as needed.
Frequently Asked Questions
Yes—103337 is an OEM Graco O-Ring Packing specified for the models listed above. Use OEM parts to maintain seal integrity and equipment warranty terms.
Match the part number in your unit’s parts diagram. If your gun is a GX-7 variant (e.g., GX-7 DI, GX-7 400) or a 12005 flow gun, it commonly uses 103337, but always verify the exploded diagram for your exact configuration.
Clean, inspect, and lightly lubricate the groove; avoid twisting the O-Ring during insertion. Tighten the packing nut to the manual’s specification and test for leaks at operating pressure.
Leakage near the packing/needle area, inconsistent spray pattern, or difficulty maintaining pressure/trigger response can indicate a worn O-Ring Packing.
Reuse isn’t recommended. Once compressed or chemically exposed, an O-Ring can harden or deform, compromising the seal. Replace with a new OEM 103337.
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