Value Collection ZBD9977-X O-ring 7/16 in Id Nbr Dash 013

Product Description

The VALUE COLLECTION ZBD9977-X is a Dash 013 nitrile butadiene rubber (NBR) o-ring with a round cross section, designed for static and dynamic sealing applications in fluid and pneumatic systems. It measures 0.438 inches inside diameter, 0.563 inches outside diameter, and 0.0625 inches thick. With a Shore A hardness of 70 and a rated temperature range of -40 degrees F to 275 degrees F, this o-ring handles the thermal and pressure demands common in HVAC, plumbing, and refrigeration connections. Licensed tradespeople and maintenance technicians reach for NBR o-rings when sealing petroleum-based fluids, water, and air in threaded fittings and valve assemblies.

This o-ring is suited for residential and light commercial applications where a small-diameter face seal or fitting seal is required. Common install scenarios include compression fittings, valve stems, solenoid valve bodies, and hydraulic or pneumatic port connections. The Dash 013 designation identifies it within the AS568 standard sizing system, making cross-referencing and replacement straightforward across multiple manufacturers and system types.

Key Features

• NBR material provides resistance to petroleum-based oils, water, and air
• Temperature rated from -40 degrees F to 275 degrees F for broad system compatibility
• Shore A hardness of 70 balances sealing compression and durability
• Round cross section conforms to standard o-ring groove dimensions
• AS568 Dash 013 designation simplifies cross-reference and replacement sourcing
• Sold individually; minimum order quantity of 50 units

Compatibility

Designed as a standard Dash 013 AS568 replacement o-ring for use in HVAC, plumbing, pneumatic, and hydraulic fittings and valve bodies that require a 0.438-inch ID nitrile seal.

Installation Notes

Power down or de-pressurize the system before removing any fitting or valve assembly. Lightly lubricate the o-ring with a compatible fluid or o-ring lubricant before seating to prevent tearing during assembly. Inspect the groove for burrs or debris that could compromise the seal. NBR o-rings are not compatible with synthetic or phosphate-ester hydraulic fluids — verify fluid compatibility before installation.