Value Collection BDNA--9988-7 O-ring Dash 126 Nbr

Product Description

The VALUE COLLECTION BDNA--9988-7 is a Dash 126 O-ring manufactured from Nitrile Butadiene Rubber (NBR) with a round cross section. It measures 1-3/8 inches inside diameter and 3/32 inches thick, with a durometer hardness of 70 Shore A. NBR compounds resist petroleum-based oils, fuels, and hydraulic fluids, making this O-ring a standard sealing component in fluid-handling assemblies. Licensed plumbers, HVAC technicians, and mechanical contractors use Dash 126 O-rings when servicing valves, fittings, pumps, and fluid connectors across a broad range of systems.

Dash 126 O-rings are widely used in residential and commercial plumbing, HVAC refrigerant circuits, hydraulic lines, and general industrial fluid-handling applications. This inch-system O-ring fits into standard Dash 126 grooves per AS568 sizing conventions. Typical installation scenarios include valve stem seals, union fittings, pump housings, and threaded port connections where a reliable static or low-speed dynamic seal is required.

Key Features

• Dash 126 standard sizing: 1-3/8 inches ID, 3/32 inches cross-section thickness
• Nitrile Butadiene Rubber (NBR) material resists petroleum oils, hydraulic fluids, and fuels
• 70 Shore A durometer provides a balance of flexibility and compression resistance
• Round cross-section profile seats correctly in standard AS568 Dash 126 grooves
• Inch-system measurement for direct replacement in North American trade applications

Compatibility

Designed as a standard Dash 126 inch-series replacement O-ring for valves, fittings, pump housings, and fluid connectors requiring a 1-3/8 inch ID NBR seal.

Installation Notes

O-ring installation should be performed by a qualified plumber, HVAC technician, or mechanical contractor. Depressurize and drain the system before disassembling any fitting or valve. Inspect the groove for nicks, burrs, or corrosion before seating the new O-ring, and apply a compatible lubricant to ease installation and reduce the risk of tearing. Never roll or twist the O-ring during installation, as distortion compromises the seal.