Value Collection ZBD9993-4 O-ring Dash 231 Nbr 2.63 in Id

Product Description

The VALUE COLLECTION ZBD9993-4 is a Dash 231 O-ring manufactured from Nitrile Butadiene Rubber (NBR) with a round cross section. It measures 2.63 inches inside diameter, 2.88 inches outside diameter, and 0.125 inches thick. With a Shore A hardness of 70 and a working temperature range of -40 degrees F to 275 degrees F, this O-ring provides reliable static and dynamic sealing in fluid and pneumatic systems. It is installed by licensed plumbers, HVAC technicians, and industrial maintenance professionals wherever a standardized Dash 231 seal is required.

This O-ring is suited for use in hydraulic fittings, pneumatic assemblies, fluid transfer lines, and general-purpose sealing applications across residential, commercial, and light industrial environments. The NBR compound offers good resistance to petroleum-based oils, fuels, and many hydraulic fluids, making it a practical choice for HVAC refrigerant-side accessories, plumbing connections, and pump housings where moderate temperature and pressure seals are needed. It ships individually but is subject to a minimum order quantity of 25 units.

Key Features

• Dash 231 standard sizing: 2.63 inches ID, 2.88 inches OD, 0.125 inches thick
• Nitrile Butadiene Rubber (NBR) compound with good resistance to petroleum-based oils and hydraulic fluids
• Shore A hardness rating of 70 for firm, reliable sealing under compression
• Operating temperature range of -40 degrees F to 275 degrees F
• Round cross section for consistent gland fill and predictable compression behavior
• Lightweight at 0.01 pounds per unit, suitable for high-volume stocking

Compatibility

Designed as a standard Dash 231 replacement O-ring for any application requiring an NBR seal at 2.63 inches ID and 2.88 inches OD with a 0.125-inch cross section.

Installation Notes

Power down or depressurize the system fully before replacing any O-ring seal. Lubricate the O-ring with a compatible fluid or grease before installation to prevent tearing during assembly. Inspect the gland groove for nicks, burrs, or corrosion that could compromise the seal. This part is not FDA approved and should not be used in food-contact or potable water applications.