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The VALUE COLLECTION BDNA--9977-7 is a Dash 024 O-ring manufactured from Nitrile Butadiene Rubber (NBR) with a round cross section. It measures 1-1/8 inches inside diameter and 1/16 inch thick. With a durometer rating of 70, this O-ring provides firm sealing performance suited to hydraulic, pneumatic, and fluid-handling applications. NBR material offers solid resistance to petroleum-based oils, fuels, and common refrigerant lubricants, making it a go-to choice for HVAC, plumbing, and mechanical trade work where hydrocarbon exposure is expected. Licensed technicians and journeyman mechanics stock these for routine seal replacements and preventive maintenance rebuilds.
This O-ring is used in residential and light commercial applications involving fluid or gas connections that require a reliable static or dynamic face seal. Typical install scenarios include valve bodies, fitting connections, pump housings, and refrigerant-side service ports. The Dash 024 sizing is a standard inch-series designation, commonly encountered across HVAC service valves, plumbing fittings, and pneumatic equipment. Sold individually with a minimum order quantity of 50 units, this part is suited for shop stocking and field kit replenishment.
Designed as a standard inch-series replacement O-ring for use in HVAC service valves, plumbing fittings, pump housings, and pneumatic components requiring a Dash 024 NBR seal.
Installation should be performed by a qualified HVAC technician, plumber, or mechanic familiar with the system being serviced. Always depressurize and isolate the system before removing or installing any O-ring seal. Lightly lubricate the O-ring with a compatible lubricant prior to installation to prevent tearing during assembly. Inspect the mating groove and sealing surface for nicks or debris before seating the new ring.
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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