Graco 168110 Packing O-Ring

The Graco 168110 Packing O-Ring is a genuine seal used in the prime/dump valve of many Graco airless sprayers to prevent leaks and maintain smooth priming. Perfect for restoring consistent spray performance.

Stops fluid leaks at the prime valve
Fits multiple Graco models (Ultra, Ultra Max, 695, and more)
OEM replacement ensures reliable sealing

$5.45

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Description

Overview & Compatibility for 168110 O-Ring

The Graco 168110 Packing O-Ring is a small but critical prime valve O-ring used to seal the drain/prime (dump) valve on many airless paint sprayers. Replacing a worn seal helps stop drips at the prime hose, restore holding pressure, and improve priming reliability across compatible Graco models.

Compatible Machines

Fits Graco sprayers that use the common prime/dump valve design (incl. assemblies like 235014). Notable models include:

GM3000 (261550)
395 Duron (231580)
495ST (231584, 231585, 232676)
Ultimate MX 695 (824910)
Ultra Max 695 (232910)
Ultra 495
Ultra Max II 695
SuperNova SPx
TurfLiner
Tradeworks 170

Tip: If your sprayer uses the Graco prime/dump valve family (e.g., 235014), this 168110 O-ring is typically the correct seal. Always confirm against your parts list or manual.

Key Benefits

Restores prime/dump valve sealing to reduce leaks and drips.
Helps maintain spray pressure and smooth priming performance.
Genuine-spec Graco 168110 Packing O-Ring for dependable fit and life.

Technical Details

Part Number	168110
Item Type	Packing O-Ring (Prime/Dump Valve Seal)
Function / Location	Seals the drain/prime valve stem-to-body interface to prevent fluid bypass and leaks.
Associated Assemblies	Used in prime/dump valve assemblies commonly found on multiple Graco airless sprayers (e.g., valve family 235014).
Compatibility Note	Match by parts manual or prime valve assembly used on your exact model for confirmation.
Typical Symptoms When Worn	Drips at prime hose, difficulty holding pressure, slow or inconsistent priming.

Service Tips

Depressurize sprayer and follow lock-out procedures before service.
Inspect the prime valve bore and stem for scoring; clean and lightly lubricate with pump-safe grease before installing the new O-ring.
After reassembly, prime with water/solvent per coating type and check for leaks.

Frequently Asked Questions

Check your model’s parts manual: if your prime/dump valve assembly lists 168110 (or uses the valve family such as 235014), this is the correct packing O-ring. You can also match by the original O-ring in your valve kit.

Common signs include leaks or drips at the prime hose, difficulty holding pressure during spraying, and inconsistent or slow priming when switching to “Prime.”

Yes—many Graco prime/dump valve repair kits include the Graco 168110 Packing O-Ring. If you’re refreshing the whole valve, consider a complete kit for best results.

No thread sealant is used on the O-ring itself. Lightly lubricate with a pump-safe lubricant to aid assembly and avoid damaging the new seal.

The OEM-spec 168110 is designed for typical airless use. Always follow the sprayer’s materials compatibility guidelines and flush procedures for the coatings you use.