Value Collection ZBD9993-15 O-ring Dash 242 Nbr

Product Description

The VALUE COLLECTION ZBD9993-15 is a Dash 242 O-ring manufactured from Nitrile Butadiene Rubber (NBR) with a round cross section. It measures 4 inches inner diameter, 4.5 inches outer diameter, and 0.125 inches thick. NBR compound provides reliable resistance to oils, fuels, and hydraulic fluids across a broad service temperature range, making it a dependable choice for sealing applications in plumbing, HVAC, and fluid-handling systems. The material hardness is rated at 70 Shore A, which falls in the hard range and suits moderate-pressure static and dynamic sealing duties. Licensed plumbers, HVAC technicians, and mechanical service professionals are the primary installers.

This O-ring is suited for use in residential and light commercial systems where a Dash 242 NBR seal is required. Typical applications include pump housings, valve bodies, pipe fittings, and fluid-system connections that operate within the rated temperature window. Its standard dash-number sizing ensures drop-in fitment wherever a Dash 242 cross-section O-ring is specified by OEM documentation or a system repair manual.

Key Features

• Nitrile Butadiene Rubber (NBR) construction resists petroleum-based oils, fuels, and hydraulic fluids
• Dash 242 standard sizing: 4 inch ID, 4.5 inch OD, 0.125 inch thickness
• Round cross section for consistent seating in standard O-ring grooves
• 70 Shore A hardness rated Hard, suitable for moderate-pressure sealing
• Rated from -40 degrees F to 275 degrees F operating temperature range

Compatibility

Designed as a standard Dash 242 replacement O-ring for any application specifying a 4 inch ID by 4.5 inch OD by 0.125 inch thick NBR round-cross-section seal.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified mechanical technician. Always depressurize and de-energize the system before replacing any O-ring seal. Inspect the mating groove for nicks, scoring, or debris before seating the new ring. Lubricate the O-ring with a compatible lubricant prior to installation to prevent tearing during assembly.