Value Collection BDNA--9977-11 O-ring Dash 031 Nbr

Product Description

The VALUE COLLECTION BDNA--9977-11 is a Dash 031 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N) with a round cross section. It measures 1-3/4 inches inner diameter and 1/16 inch thickness. Buna-N compound provides reliable resistance to petroleum-based fluids, making this O-ring a standard sealing solution in hydraulic, pneumatic, plumbing, and HVAC applications. Licensed plumbers, HVAC technicians, and mechanical contractors commonly specify Dash 031 Buna-N O-rings for replacement seals in fittings, valves, pumps, and fluid-handling assemblies where a stable, oil-resistant elastomer is required.

This O-ring is suited for residential and commercial maintenance and repair scenarios where a standard Dash 031 cross-section seal is called for. Typical installation environments include hydronic heating systems, refrigeration service ports, compressed-air fittings, and general plumbing shutoff valves. The Buna-N material performs reliably across a broad range of operating temperatures and is compatible with water, oils, and many common hydraulic fluids encountered in trade service work. Minimum order quantity is 25 pieces; package quantity is 1.

Key Features

• Dash 031 standard sizing for straightforward cross-reference and replacement
• 1-3/4 inch inner diameter with 1/16 inch thickness, round cross section
• Buna-N (Nitrile Butadiene Rubber) compound resists petroleum oils, hydraulic fluids, and water
• Round cross section ensures consistent groove seating and uniform compression
• Lightweight at 0.01 pounds, suitable for high-volume stock and field kits

Compatibility

Designed as a standard Dash 031 replacement O-ring suitable for hydraulic, pneumatic, plumbing, and HVAC fluid-handling components requiring a 1-3/4 inch ID Buna-N seal.

Installation Notes

Installation should be performed by a qualified plumber, HVAC technician, or mechanical contractor. Depressurize and isolate the system completely before removing any fitting or component containing an O-ring. Lubricate the O-ring with a compatible fluid or O-ring lubricant prior to seating to avoid tearing during assembly. Inspect the groove and mating surfaces for nicks or corrosion before installing the new seal.