Value Collection BDNA-MP9977 O-ring Dash 012 Nbr

Product Description

The VALUE COLLECTION BDNA-MP9977 is a Dash 012 O-ring manufactured from Nitrile Butadiene Rubber (NBR) with a round cross section. It measures 3/8 inches inside diameter with a wall thickness of 1/16 inch and carries a Shore A durometer rating of 70, indicating a medium-firm hardness suited for dynamic and static sealing applications. NBR compounds offer reliable resistance to petroleum-based fluids, hydraulic oils, and water, making this O-ring a practical choice for fluid system maintenance across HVAC, plumbing, and general mechanical service work.

This O-ring fits standard Dash 012 groove dimensions per inch-series O-ring standards. It is used in residential and light commercial applications where a small-diameter static or low-pressure dynamic seal is required. Typical installations include valve stems, fitting connections, pump housings, and refrigerant or water line fittings. Technicians working on hydronic systems, refrigeration circuits, and plumbing assemblies regularly stock this size as a service replacement. The inch-measurement system designation confirms compatibility with standard SAE and domestic O-ring groove specifications.

Key Features

• Nitrile Butadiene Rubber (NBR) construction resists petroleum-based oils, hydraulic fluids, and water
• 3/8 inch inside diameter with 1/16 inch thickness in standard Dash 012 sizing
• Round cross-section profile seats evenly in standard O-ring grooves
• Shore A 70 durometer provides medium-firm hardness for static and dynamic sealing
• Inch-series dimensioning compatible with SAE and domestic groove standards

Compatibility

Designed as an OEM-style replacement O-ring for any application requiring a Dash 012, inch-series NBR O-ring with a 3/8 inch inside diameter and 1/16 inch cross-section thickness.

Installation Notes

Installation is performed by licensed plumbers, HVAC technicians, or qualified mechanical service professionals. Always depressurize and isolate the line or assembly before removing the old O-ring. Lightly lubricate the O-ring with a compatible fluid or O-ring lubricant before seating to prevent pinching or tearing during installation. Inspect the groove for nicks or debris before installing the new seal.