Value Collection BDNA--9984-6 O-ring Dash 128 Nbr

Product Description

The VALUE COLLECTION BDNA--9984-6 is a standard Dash 128 O-ring used to create static or dynamic fluid seals in plumbing, HVAC, and mechanical assemblies. It measures 1-1/2 inches inside diameter with a 3/32 inch cross-section thickness and a round cross-section profile. Constructed from Nitrile Butadiene Rubber (NBR) with a durometer rating of 70, it resists petroleum-based oils, fuels, and hydraulic fluids across a broad service temperature range. Licensed plumbers, HVAC technicians, and industrial maintenance mechanics commonly use this O-ring to seal valve stems, fittings, pump housings, and fluid couplings.

This O-ring is suited for residential and light commercial plumbing and HVAC applications where an inch-system Dash 128 seal is required. Typical installation scenarios include replacing worn or damaged seals in gate valves, ball valves, pump flanges, and refrigerant-side fittings. The NBR compound makes it appropriate for water, oil, and gas service lines where a durable, compression-set-resistant seal is needed. It is sold individually with a minimum order quantity of 25 units.

Key Features

• Dash 128 standard sizing: 1-1/2 inches inside diameter, 3/32 inch cross-section thickness
• Nitrile Butadiene Rubber (NBR) construction resists petroleum oils, hydraulic fluids, and water
• 70 durometer hardness provides a firm, reliable compression seal
• Round cross-section profile for consistent seating in standard O-ring grooves
• Inch-system dimensioning for direct replacement in imperial-spec assemblies

Compatibility

Designed as a standard Dash 128 inch-system O-ring replacement for valves, pumps, fittings, and fluid couplings that specify a 1-1/2 inch ID, 3/32 inch thick NBR seal.

Installation Notes

Installation is performed by plumbers, HVAC technicians, or mechanical maintenance personnel. Shut off and depressurize the system and drain any residual fluid before removing the old seal. Lightly lubricate the O-ring with a compatible fluid or grease before seating it to prevent tearing during assembly. Inspect the groove for nicks or corrosion that could compromise the seal before installing the replacement.