Value Collection ZMSCH70MD023 Nbr O-ring Dash 023

Product Description

The VALUE COLLECTION ZMSCH70MD023 is a Dash 023 nitrile butadiene rubber (NBR) O-ring with a round cross section, designed for static and dynamic sealing applications across plumbing, HVAC, and fluid-handling systems. It measures 1.0625 inches inside diameter, 1.1870 inches outside diameter, and 0.0625 inches thick. The compound carries a Shore A hardness of 70, placing it in the hard hardness rating range. NBR is the most widely used O-ring elastomer in the trades, valued for its excellent resistance to petroleum-based fluids, strong compression set characteristics, and solid tear and abrasion resistance.

This O-ring is suited for use in hydraulic fittings, pipe connections, valve stems, pump housings, and fluid-control assemblies where contact with petroleum products is expected. The Dash 023 designation is a standard AS568 sizing reference, making it straightforward to cross-reference against existing hardware specifications. Typical applications include residential and light commercial HVAC equipment, plumbing valve repairs, and general mechanical assemblies. Each package contains 10 O-rings, and the minimum order quantity is 1 package.

Key Features

• Nitrile butadiene rubber construction with excellent resistance to petroleum-based fluids and lubricants
• 70 Shore A hardness for reliable sealing under compression in standard-duty applications
• Rated for service from -40 degrees F to 250 degrees F
• Round cross section conforms to standard AS568 Dash 023 sizing
• Strong tear and abrasion resistance for dynamic sealing environments
• Should not be stored in direct sunlight or near motors or other electrical equipment that may generate ozone

Compatibility

Compatible with petroleum products and petroleum-based fluids. Designed as a standard AS568 Dash 023 O-ring replacement for use in plumbing, HVAC, hydraulic, and general mechanical sealing applications where NBR elastomer is specified.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or qualified mechanical technicians. Shut off fluid supply and relieve system pressure before replacing any O-ring. Lightly lubricate the O-ring with a compatible petroleum-based or system-appropriate lubricant before seating to prevent tearing during installation. Avoid stretching the ring beyond its elastic limit or exposing it to ozone-generating equipment during storage or service.