Value Collection BDNA--9977-3 O-ring Dash 019 Nbr

Product Description

The VALUE COLLECTION BDNA--9977-3 is a Dash 019 O-ring manufactured from Nitrile Butadiene Rubber (NBR) for use in fluid and gas sealing applications across plumbing, HVAC, and mechanical systems. It features a 13/16-inch inside diameter and a 1/16-inch wall thickness with a round cross section. The material durometer rating is 70, indicating a firm yet compressible rubber compound suited for moderate-pressure sealing environments. Licensed plumbers, HVAC technicians, and mechanical service professionals commonly install these rings when rebuilding valves, fittings, pumps, and fluid-handling components.

This O-ring is sized to the Dash 019 standard, placing it in a widely used range for residential and light commercial plumbing and HVAC applications. It is appropriate wherever an inch-system NBR O-ring of this cross section is required, including valve seats, union connections, pump housings, and refrigerant-side fittings compatible with NBR elastomers. The minimum order quantity is 50 units, and each unit ships as a single piece.

Key Features

• Dash 019 standard sizing — 13/16-inch inside diameter, 1/16-inch thickness
• Nitrile Butadiene Rubber (NBR) construction with 70 durometer hardness for reliable compression sealing
• Round cross section for consistent seat contact and leak-free performance
• Inch measurement system — direct fit for standard imperial-dimensioned hardware
• Sold individually; minimum order quantity of 50 units

Compatibility

Designed as a standard Dash 019 inch-series NBR O-ring for use in valves, fittings, pumps, and mechanical assemblies requiring a 13/16-inch ID round-cross-section seal compatible with nitrile elastomers.

Installation Notes

Installation is typically performed by licensed plumbers or HVAC technicians during valve rebuilds, union reassembly, or pump servicing. Always depressurize the system and isolate the fluid supply before removing or installing O-rings. Inspect the seating groove for scoring or debris before fitting the new ring. Avoid twisting the O-ring during installation, as torsional deformation can cause premature seal failure.