Value Collection BDNA--9991-5 O-ring Dash 221 Nbr

Product Description

The VALUE COLLECTION BDNA--9991-5 is a Dash 221 O-ring made from Nitrile Butadiene Rubber (Buna-N) for use in fluid and pneumatic sealing applications across HVAC, plumbing, and industrial equipment. It measures 1-7/16 inches inside diameter with a 1/8-inch cross-section thickness and features a round cross-section profile. Buna-N compound is well suited for petroleum-based fluids, water, and many refrigerants, making it a common choice for service technicians replacing worn or damaged seals during maintenance or repair work. This O-ring is sold individually per package with a minimum order quantity of 25 units.

This O-ring is appropriate for residential and light commercial applications wherever a Dash 221 size seal is required. Typical uses include valve packing, fitting connections, pump housings, and manifold assemblies in HVAC, plumbing, and refrigeration systems. It is a standard replacement seal for technicians performing routine service on equipment that specifies a Dash 221 O-ring in Buna-N material.

Key Features

• Dash 221 standard sizing for straightforward cross-reference and replacement
• 1-7/16-inch inside diameter for precise groove fit
• 1/8-inch round cross-section for consistent compression and seal integrity
• Buna-N (Nitrile Butadiene Rubber) compound resistant to petroleum fluids and water
• Sold individually with a minimum order quantity of 25 units per order

Compatibility

Designed as a standard Dash 221 replacement O-ring suitable for any application specifying a 1-7/16-inch ID, 1/8-inch cross-section Buna-N seal.

Installation Notes

Installation is typically performed by licensed HVAC technicians, plumbers, or refrigeration mechanics as part of valve, fitting, or pump service. Always depressurize and isolate the system before removing any seals. Lightly lubricate the O-ring with a compatible fluid or assembly lubricant before seating to prevent tearing during installation. Inspect the groove for nicks or corrosion before installing the replacement seal.