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The VALUE COLLECTION ZMSCQH70218 is a Dash 218 O-ring with an X-profile (quattro) cross section, manufactured from Nitrile Butadiene Rubber (NBR). It measures 1.25 inches inside diameter, 1.5 inches outside diameter, and 0.125 inches thick. The X-profile cross section reduces spiral twist and improves sealing contact compared to a standard round cross section. NBR material provides reliable resistance to petroleum-based fluids, hydraulic oils, and fuels, making it well suited for fluid sealing applications in HVAC, plumbing, and mechanical systems. This package contains 50 O-rings.
This O-ring is used in applications requiring a Dash 218 size seal with an X-profile cross section. Typical installations include hydraulic fittings, fluid connectors, valve stems, pump housings, and piping unions in both residential and light commercial systems. The NBR compound performs across a broad temperature range, making it a practical choice for stationary sealing in moderate-pressure fluid circuits. Plumbers, HVAC technicians, and pipefitters commonly stock Dash 218 O-rings for routine service and repair of threaded and compression-style fittings.
Designed as a standard Dash 218 replacement O-ring for hydraulic fittings, valve assemblies, and fluid connectors requiring an X-profile NBR seal in that size class.
Depressurize and drain the system before replacing any O-ring in a fluid circuit. Lightly lubricate the O-ring with a compatible fluid or O-ring lubricant before seating to prevent nicking during installation. Inspect the groove for burrs or corrosion that could damage the seal. Installation should follow applicable plumbing or mechanical codes such as the IPC for piping systems.
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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