Value Collection BDNA-MP9986 O-ring Dash 211 Nitrile Buna-n

Product Description

The VALUE COLLECTION BDNA-MP9986 is a Dash 211 O-ring with a 13/16-inch inner diameter and a 1/8-inch cross-section thickness. Manufactured from Nitrile Butadiene Rubber (Buna-N), this O-ring features a round cross-section profile suited for static and dynamic sealing applications in fluid and pneumatic systems. Buna-N material provides reliable resistance to petroleum-based fluids, making it a common choice in HVAC, plumbing, and general mechanical assemblies. Licensed trades and maintenance technicians install this type of seal during equipment servicing, valve repair, and fitting replacement work.

This O-ring is appropriate for use in residential and light commercial applications wherever a Dash 211 size seal is specified. Typical install scenarios include pump and valve rebuilds, refrigeration service fittings, hydraulic connections, and plumbing shut-off assemblies. Its Buna-N compound is compatible with water, oils, and many common refrigerants in low-exposure sealing points. Always verify the specific fluid and temperature compatibility of Buna-N against the system medium before installation.

Key Features

• Dash 211 standard sizing — 13/16-inch inner diameter with 1/8-inch cross-section thickness
• Nitrile Butadiene Rubber (Buna-N) construction for resistance to petroleum-based fluids and water
• Round cross-section profile for consistent seating in standard O-ring grooves
• Lightweight at 0.01 pounds — suitable for high-volume service kit stocking
• UNSPSC Code 31401503 for streamlined procurement classification

Compatibility

Designed as a standard Dash 211 O-ring replacement for any application calling for a 13/16-inch ID, 1/8-inch thick Buna-N round cross-section seal in fluid or pneumatic systems.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or qualified maintenance mechanics. Always depressurize and isolate the system before removing or installing O-rings, and ensure all mating surfaces are clean and free of debris or old sealant. Lightly lubricating the O-ring with a compatible fluid or O-ring lubricant before installation helps prevent tearing during assembly. Do not stretch the O-ring beyond the groove dimensions, and inspect for nicks or cuts before seating.