Value Collection ZBD9984-21 O-ring Dash 143 Nbr

Product Description

The VALUE COLLECTION ZBD9984-21 is a Dash 143 O-ring used to create static or dynamic fluid and gas seals in hydraulic, pneumatic, and fluid-transfer systems. Made from Nitrile Butadiene Rubber (NBR) with a 70 durometer hardness rating, it resists petroleum-based oils, fuels, and hydraulic fluids across a temperature range of -40 degrees F to 275 degrees F. The round cross section measures 0.0937 inches thick with an inside diameter of 2.44 inches and an outside diameter of 2.63 inches. This O-ring is installed by plumbers, hydraulic technicians, HVAC mechanics, and industrial maintenance trades wherever a reliable elastomeric seal is required at a standard Dash 143 groove.

This O-ring is suited for residential and commercial plumbing assemblies, HVAC refrigerant circuits, hydraulic manifolds, pump housings, and general fluid-handling equipment where a standard Dash 143 groove profile is machined or molded into the mating components. NBR material makes it a practical choice for systems carrying petroleum oils, water, fuels, or air within the stated temperature limits. It is sold individually but carries a minimum order quantity of 25 units, making it appropriate for service shops stocking standard seal sizes for routine maintenance and repair work.

Key Features

• Dash 143 standard sizing — fits grooves designed to AS568 Dash 143 specifications
• Nitrile Butadiene Rubber (NBR) construction resists petroleum oils, hydraulic fluids, and fuels
• 70 durometer hardness provides a firm, reliable seal under pressure
• Operating temperature range of -40 degrees F to 275 degrees F
• Round cross section for consistent compression and groove engagement
• Lightweight at 0.01 pounds — suitable for tight clearance assemblies

Compatibility

Designed as a standard Dash 143 replacement O-ring for any hydraulic, pneumatic, plumbing, or HVAC assembly that calls for an NBR seal with a 2.44-inch inside diameter and 0.0937-inch cross section thickness.

Installation Notes

Installation is performed by the appropriate licensed trade based on the host system — plumbers, HVAC technicians, or hydraulic equipment mechanics. Always depressurize and de-energize the system before replacing any O-ring seal. Lubricate the O-ring with a compatible grease or fluid prior to seating to prevent pinching or tearing during assembly. Do not roll or twist the O-ring into the groove; press it evenly to ensure full, uniform seating.