Value Collection BDNA--9993-1 O-ring Dash 228 Nbr

Product Description

The VALUE COLLECTION BDNA--9993-1 is a Dash 228 O-ring used to create static or dynamic fluid seals in plumbing, HVAC, and general mechanical assemblies. It has an inside diameter of 2.25 inches and a thickness of 0.125 inches, with a round cross section. The ring is molded from Nitrile Butadiene Rubber (NBR) and carries a Shore A durometer rating of 70, giving it good resistance to petroleum-based oils, fuels, and water. Plumbers, HVAC technicians, and pipefitters install this type of seal when servicing valves, fittings, pumps, and hydraulic connections.

This O-ring is suited for residential and light commercial applications where an inch-system Dash 228 seal is required. Typical install scenarios include pump housings, shutoff valve bonnets, filter housings, and threaded or flanged pipe connections exposed to water, oil, or refrigeration fluids. The NBR compound performs across a broad service temperature range, making it a common choice in mechanical rooms, boiler rooms, and equipment pads. Minimum order quantity is 25 units; package quantity is 1 unit per package.

Key Features

• Dash 228 standard sizing: 2.25 inches ID, 0.125 inches thickness
• Nitrile Butadiene Rubber (NBR) construction resists petroleum oils, fuels, and water
• Shore A durometer of 70 for firm, reliable sealing under compression
• Round cross-section profile for consistent contact and uniform sealing surface
• Inch-system measurement for direct replacement in standard U.S. plumbing and HVAC assemblies

Compatibility

Designed as a standard Dash 228 inch-system O-ring replacement for valves, pumps, fittings, and filter housings that call for a 2.25 inches ID, 0.125 inches cross-section NBR seal.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified pipefitter. Shut off and depressurize the system completely before removing any fitting or housing. Inspect the mating groove for nicks, burrs, or corrosion before seating the new ring. Avoid twisting or overstretching the O-ring during installation; use a compatible lubricant approved for NBR compounds and the system fluid type.