Value Collection ZBD9979 O-ring Nbr Dash 111

Product Description

The VALUE COLLECTION ZBD9979 is a round cross-section O-ring manufactured from Nitrile Butadiene Rubber (NBR), a synthetic elastomer widely used in fluid and pneumatic sealing applications. With an inside diameter of 0.44 inches, an outside diameter of 0.63 inches, and a thickness of 0.0937 inches (3/32 inches), this seal conforms to Dash 111 sizing. The NBR compound delivers reliable resistance to oils, fuels, and hydraulic fluids, making it a practical choice for sealing in HVAC, plumbing, and mechanical systems. Rated at a Shore A hardness of 70, it provides firm sealing under pressure without excessive deformation.

This O-ring is suited for use in residential and light commercial applications where a Dash 111 NBR seal is required. Typical installation scenarios include refrigerant line fittings, hydraulic assemblies, compressed air components, and general-purpose fluid connections. The operating temperature range of -40 degrees F to 275 degrees F accommodates most HVAC, plumbing, and light industrial service environments. HVAC technicians, plumbers, and mechanical contractors commonly use this size during equipment maintenance and repair.

Key Features

• NBR material resists petroleum-based oils, fuels, and hydraulic fluids
• Dash 111 standard sizing for straightforward cross-reference and replacement
• Round cross-section geometry for consistent groove fit and uniform sealing pressure
• Shore A hardness of 70 rated Hard for reliable sealing under mechanical load
• Wide service temperature range: -40 degrees F to 275 degrees F
• Lightweight at 0.01 pounds per unit, minimizing system weight impact

Compatibility

Designed as a standard Dash 111 O-ring replacement for any groove or fitting dimensioned to accept a 0.44-inch ID by 0.63-inch OD by 0.0937-inch cross-section NBR seal.

Installation Notes

Installation is performed by licensed HVAC technicians, plumbers, or qualified mechanical contractors. Always depressurize and isolate the system before removing any sealing components. Inspect the mating groove and sealing surfaces for nicks or contamination prior to installing the new O-ring. Lubricate the O-ring with a compatible lubricant for the service fluid before seating to prevent rolling or tearing during assembly.