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The VALUE COLLECTION ZMSCQH70333 is a Dash 333 O-ring with an X-profile (quattro) cross section, manufactured from nitrile butadiene rubber (NBR). With an inside diameter of 2.5 inches, an outside diameter of 2.875 inches, and a cross-section thickness of 0.1875 inches, this ring provides a reliable seal in fluid and pneumatic systems. The X-profile cross section improves stability in the groove and reduces spiral twist compared to standard round-section rings. Sold in packs of 10, this part is suited for plumbing, HVAC, and industrial maintenance applications where NBR compatibility with oils, fuels, and hydraulic fluids is required.
NBR O-rings in the Dash 333 size are commonly used in residential and commercial plumbing assemblies, HVAC equipment, pool and spa fittings, and general mechanical systems that handle water, oil-based fluids, or compressed air. The X cross-section design makes this ring a direct functional improvement over standard round-section O-rings in dynamic or high-cycle applications where groove retention is important. Technicians working on pumps, valves, fittings, and manifold assemblies will find this a standard service part.
Designed as a standard Dash 333 replacement O-ring for plumbing, HVAC, pool, and general industrial assemblies that accept NBR X-profile seals in the 2.5 inches ID size range.
Installation should be performed by a qualified plumber, HVAC technician, or mechanical service professional. Depressurize and drain the system fully before removing the old seal and installing the replacement ring. Inspect the groove for debris, corrosion, or damage before seating the new O-ring. Apply a compatible lubricant to the O-ring during installation to prevent pinching or tearing; avoid petroleum-based lubricants if incompatible with the system fluid.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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