Value Collection BDNA--9991-9 O-ring Dash 225 Nitrile

Product Description

The VALUE COLLECTION BDNA--9991-9 is a Dash 225 O-ring designed for fluid and gas sealing applications across plumbing, HVAC, and mechanical systems. It features a 1-7/8 inch inside diameter and a 1/8 inch cross-section thickness with a round cross-section profile. Constructed from Nitrile Butadiene Rubber (Buna-N), this O-ring provides reliable resistance to petroleum-based fluids, oils, and common refrigerants. A Shore A durometer rating of 70 delivers a firm yet compressible seal suitable for moderate-pressure environments. Licensed technicians and plumbers rely on this standard inch-series O-ring for service and repair work on pumps, valves, fittings, and equipment housings.

This O-ring is suited for residential and light commercial applications where a Dash 225 inch-series seal is specified. Typical installation scenarios include pump seal replacement, valve body service, refrigeration fittings, and hydraulic or pneumatic connections that require a chemical-resistant elastomeric seal. Buna-N material makes this a practical choice in systems that circulate mineral oils, water, fuel, or refrigeration oils. This part is sold individually with a minimum order quantity of 25 units per order.

Key Features

• Dash 225 standard sizing for straightforward cross-reference and replacement
• 1-7/8 inch inside diameter with 1/8 inch thickness for precise groove fitment
• Buna-N (Nitrile Butadiene Rubber) construction resists petroleum-based fluids and oils
• Shore A 70 durometer provides a firm, reliable seal under moderate pressure
• Round cross-section profile conforms to standard O-ring groove dimensions
• Inch-series measurement system for compatibility with standard SAE and industrial hardware

Compatibility

Designed as a standard Dash 225 inch-series O-ring replacement for use in pumps, valves, fittings, and equipment housings that specify a 1-7/8 inch ID, 1/8 inch thick Buna-N seal.

Installation Notes

Installation is performed by licensed plumbers, HVAC technicians, or qualified mechanical service professionals. Always depressurize and de-energize the system before removing old seals or disassembling fittings. Lightly lubricate the O-ring with a compatible grease or fluid prior to seating to prevent tearing during installation. Inspect the groove for damage or debris before installing a replacement seal.