Value Collection ZBD9993-13 O-ring Nbr Dash 240

Product Description

The VALUE COLLECTION ZBD9993-13 is a Dash 240 O-ring manufactured from Nitrile Butadiene Rubber (NBR) with a round cross section. It measures 3.75 inches inside diameter, 4 inches outside diameter, and 0.125 inches thick. NBR compound delivers reliable resistance to petroleum-based fluids, hydraulic oils, and water, making this O-ring a go-to sealing solution for plumbing, hydraulic, and mechanical assemblies. The durometer rating of 70 Shore A provides a firm but conforming seal under pressure. Licensed plumbers, pipefitters, and mechanical technicians routinely stock Dash 240 O-rings for planned maintenance and emergency repairs across fluid-handling systems.

This O-ring is suited for use in residential and commercial plumbing systems, hydraulic circuits, pump housings, valves, and fluid connectors where a 3.75-inch ID sealing element is required. Its rated temperature range of -40 degrees F to 275 degrees F makes it appropriate for both cold-water supply and moderate-temperature process fluid applications. The NBR material resists degradation from oils, fuels, and many common industrial fluids encountered in HVAC, plumbing, and pool equipment service.

Key Features

• Dash 240 standard sizing: 3.75 inches ID, 4 inches OD, 0.125 inches thick
• Nitrile Butadiene Rubber construction resists petroleum oils, hydraulic fluids, and water
• Round cross section for consistent compression and sealing performance
• 70 Shore A hardness rating — firm seal with controlled deformation under load
• Wide service temperature range: -40 degrees F to 275 degrees F
• Not FDA approved — intended for industrial and mechanical fluid systems, not food-contact applications

Compatibility

Designed as an OEM-style replacement or maintenance stock O-ring for fluid-handling assemblies requiring a Dash 240 NBR sealing element, including pump housings, valves, pipe fittings, and hydraulic components with a 3.75-inch ID groove.

Installation Notes

Installation should be performed by a licensed plumber, pipefitter, or qualified mechanical technician. Depressurize and drain the system completely before removing any existing seals. Inspect the groove and mating surfaces for nicks, burrs, or corrosion before seating the new O-ring. Apply a compatible, fluid-rated lubricant to the O-ring prior to installation to prevent tearing during assembly — avoid petroleum-based lubricants incompatible with NBR if the service fluid requires it.