A flawless seal between the pump cylinder and crankcase is mission-critical on every airless rig. The genuine 17V093 O-ring featured in factory diagrams for Ultra, 390 PC, 395 PC and similar units. Slides into its groove and locks out air, solvent, and pigment, protecting cylinder and foot valve housing connection from leaks. Because it’s molded from solvent-resistant elastomer, one gasket survives dozens of flush cycles and harsh job-site cleaners. Keep a handful on hand with your graco 390 parts and other wear items, or bundle it into scheduled Graco Pumps Repair Kits to cut downtime to minutes. The part is inexpensive, small enough to pocket, and stocked at our warehouse, being an authorized distributor, so a quick search for a nearby option“graco store near me” keeps you spraying the soon. Whether you run a single pump paint sprayer for homeowner projects or manage a fleet of contractor rigs, swapping a fresh 17V093 before it fails saves labor, coatings, and reputation.
Aftermarket gaskets kept blowing out on hot epoxy. The factory 17V093 lasted the entire tank and still looked new.
Inside every piston-driven airless sprayer, the Pump Cylinder threads into the Inlet Valve Housing. A tiny elastomer or teflon ring like Graco part 17V093 or other variants forms the only barrier preventing high-pressure coating and solvent from Leaking. When the seal flattens, cracks, or loses elasticity, pressure bleeds away, the sprayer hardly stays primed. Replacing the ring at the first sign of seepage costs pennies but saves a pump rebuild that can top $300 in parts and labor.
Although shipped on many ProConnect-series pumps, the 17V093 also cross-references to graco 390 parts diagrams and legacy Ultra Max models. Contractors running most Graco airless paint sprayer for small-batch stains or trim enamels will find the same seal nestled behind the cylinder threads. Including the ring in your mobile kit alongside filters and tip seats means one part protects several sprayers.
Graco molds the gasket from a proprietary nitrile blend engineered for coating chemistry: it resists swelling in lacquer thinner, cracking in ammonia-based paints, and compression set under 3300 PSI spikes. Generic black O-rings bought in bulk plumbing assortments may fit the groove, but testing shows they flatten after a day of alcohol flush, leading to dangerous blow-by. Sticking with the OEM quality ensures consistent durometer, perfect inside diameter, and a bead that pops back after every stroke.
Total bench time: about four minutes less if you’ve practiced on a shop unit.
Graco recommends changing the seal every 250 gallons or any time you notice packing weep. Pros who log that volume weekly simply schedule an O-ring swap during Monday morning setup, treating the tiny gasket like a dollar-sized insurance policy. That routine if practised for the entire fleet, means to keeps parts for other units like graco quickshot parts, handheld cup seals, and mainline packings equally fresh, creating a culture of preventive care that stops production disasters before they start.
• Cylinder threads, replace if pitting is visible.
• Pump rod, check chrome for scoring on every graco 190-595 paint sprayer service.
• Packings, swap the complete set on 500-gallon intervals or when leakage persists.
• Prime-spray valve, sticking handles often trace back to dirty oil baths caused by failed O-rings.
The same ring supports ProConnect pumps found in FinishPro HVLP and graco 395 paint sprayer parts lists, meaning one blister pack can fit multiple units. If the pump cylinder shows excessive hourglass wear, move up to a graco replacement pump; otherwise, a new O-ring and packing set will push the service interval another season.
Because the part weighs less than an ounce, slip ten into your next paint spraying equipment order. Label one for each rig’s glovebox, and your techs will never rummage through mixed gasket bins again.
Add 17V093 O-rings to your cart, choose same-day fulfillment, and give every sprayer in your fleet the seal it deserves. Smooth pressure, solvent confidence, and silent pumps delivered in one simple ring change.
Subscribe to our newsletter to get exclusive discounts and new theme launches right in your inbox.
You may unsubscribe at any moment. For that purpose, please find our contact info in the legal notice.
