Value Collection BDNA--9991-8 O-ring Dash 224 Nbr

Product Description

The VALUE COLLECTION BDNA--9991-8 is a Dash 224 O-ring used to create static or dynamic fluid seals in hydraulic, pneumatic, plumbing, and HVAC applications. It measures 1-3/4 inches inside diameter with a 1/8 inch cross-section thickness and a round cross-section profile. Molded from Nitrile Butadiene Rubber (NBR) with a 70 durometer hardness rating, it offers reliable resistance to petroleum-based oils, fuels, and common hydraulic fluids. Licensed plumbers, HVAC technicians, and industrial maintenance professionals install these rings wherever a dependable inch-system seal is required.

This O-ring is suited for residential and commercial plumbing systems, HVAC refrigerant and fluid circuits, hydraulic equipment, and general industrial machinery. The Dash 224 designation follows the standard AS568 inch-series sizing system, making it straightforward to source as a direct replacement in any application calling out that dash number. Its NBR compound performs across a broad range of operating temperatures, making it a common choice in both fixed and moving-joint sealing scenarios.

Key Features

• Dash 224 designation per standard inch-series O-ring sizing
• 1-3/4 inch inside diameter for precise fit in standard-sized grooves
• 1/8 inch round cross-section for consistent compression and seal integrity
• Nitrile Butadiene Rubber (NBR) material resists petroleum oils, hydraulic fluids, and fuels
• 70 durometer hardness balances flexibility with wear resistance
• Inch measurement system for compatibility with standard SAE and imperial hardware

Compatibility

Designed as a standard inch-series replacement O-ring for any application specifying a Dash 224 size in NBR or equivalent nitrile compound.

Installation Notes

Installation should be performed by a qualified plumber, HVAC technician, or hydraulic systems technician. Relieve all system pressure and shut off fluid supply before removing the existing O-ring. Lightly lubricate the O-ring with a compatible fluid or grease before seating it in the groove to prevent tearing during assembly. Avoid using petroleum-based lubricants with non-NBR compounds and never stretch the ring beyond the groove diameter during installation.