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The VALUE COLLECTION ZMSCQH70220 is a Dash 220 O-ring featuring an X-profile (quattro) cross section, manufactured from Nitrile Butadiene Rubber (NBR). Unlike standard round-cross-section O-rings, the X-profile design provides four sealing lobes, reducing spiral twist during installation and improving sealing performance in dynamic and static applications. The ring measures 1.375 inches inside diameter, 1.625 inches outside diameter, and 0.125 inches thick. This package contains 50 pieces, making it well-suited for stocking service vans or shop bins. HVAC technicians, plumbers, and equipment service pros use NBR O-rings regularly for fluid and refrigerant sealing tasks in mechanical assemblies.
NBR O-rings in the Dash 220 size are common in HVAC equipment, plumbing valves, hydraulic fittings, and general industrial fluid-handling assemblies. The X-profile cross section is typically specified where groove geometry or dynamic movement would cause a round O-ring to roll or twist. This size fits standard AN and SAE dash-220 groove dimensions used across residential and light commercial equipment. The 50-piece pack quantity suits technicians who replace these seals routinely during preventive maintenance or equipment rebuilds.
Designed as an OEM-style replacement O-ring for any application specifying a Dash 220 X-profile NBR seal in standard AN or SAE dash-220 groove dimensions.
O-ring replacement is performed by qualified HVAC technicians, plumbers, or mechanical service professionals. Always depressurize and isolate the system before removing the old seal, and confirm the groove is clean and free of damage before installing the new ring. Lightly lubricate the O-ring with a compatible fluid or grease prior to installation to prevent tearing during assembly. Do not roll or stretch the ring excessively during fitment.
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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