Value Collection ZBD9994-7 O-ring Dash 340 Nbr

Product Description

The VALUE COLLECTION ZBD9994-7 is a Dash 340 O-ring manufactured from Nitrile Butadiene Rubber (NBR), a synthetic elastomer widely used in fluid-sealing applications across plumbing, HVAC, and hydraulic systems. It measures 3.38 inches inside diameter, 3.75 inches outside diameter, and 0.1875 inches thick, with a round cross section and a Shore A hardness of 70. This O-ring is rated for service from -40 degrees F to 275 degrees F, making it suitable for a broad range of operating temperatures encountered in mechanical and fluid systems. Plumbers, HVAC technicians, and industrial maintenance professionals install this type of seal during assembly, repair, or overhaul of equipment with standard Dash 340 groove dimensions.

The ZBD9994-7 is appropriate for use in residential and commercial applications wherever a Dash 340 NBR O-ring is specified. Common installation scenarios include pump housings, valve bodies, pipe unions, refrigeration fittings, and hydraulic cylinder end caps. NBR compound provides good resistance to petroleum-based oils, hydraulic fluids, water, and many common refrigerants, making it a practical general-purpose sealing choice for trade professionals working across multiple system types.

Key Features

• Dash 340 standard sizing: 3.38 inches ID, 3.75 inches OD, 0.1875 inches thick
• Nitrile Butadiene Rubber (NBR) compound offers resistance to oils, fuels, and hydraulic fluids
• Round cross section for consistent seating in standard O-ring grooves
• Shore A hardness of 70 balances flexibility and compression resistance
• Rated from -40 degrees F to 275 degrees F for wide service range

Compatibility

Designed as a replacement or service O-ring for any application specifying a Dash 340 NBR O-ring with a 3.38 inches inside diameter and 0.1875 inches cross-section thickness.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or qualified maintenance personnel. Always depressurize and drain the system before removing the existing O-ring. Inspect the groove for nicks, burrs, or corrosion before seating the new ring. Apply a light coat of compatible lubricant to the O-ring to aid installation and prevent tearing during assembly.