Value Collection BDNA-C560301 O-ring Dash 202 Nitrile

Product Description

The VALUE COLLECTION BDNA-C560301 is a Dash 202 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N) for reliable sealing in fluid and pneumatic systems. It features a 0.25-inch inside diameter and a 0.125-inch round cross section, making it a standard size used across a wide range of trade applications. The black Buna-N compound provides solid resistance to petroleum-based fluids, oils, and moderate pressures, which are common service conditions in HVAC, plumbing, and industrial maintenance work. Licensed tradespeople and maintenance technicians reach for this O-ring when performing seal replacements on valves, fittings, and fluid-handling components.

This O-ring is suited for residential and light commercial applications wherever a Dash 202 seal is specified. Typical install scenarios include valve stem sealing, refrigerant circuit service ports, water line fittings, and pneumatic component assembly. Buna-N compound performs well in contact with mineral oils, hydraulic fluids, water, and many fuels. It is not recommended for use with glycol-based fluids, ozone exposure, or aromatic hydrocarbons where alternative elastomers such as EPDM or Viton are preferred. Sold individually; minimum order quantity is 25 pieces.

Key Features

• Dash 202 standard sizing — 0.25-inch inside diameter, 0.125-inch cross section thickness
• Buna-N (Nitrile Butadiene Rubber) elastomer for resistance to petroleum-based oils and fluids
• Round cross section profile for consistent seat contact and leak-free sealing
• Black color standard for Buna-N O-ring identification
• Lightweight at 0.01 pounds per piece — suitable for high-volume stocking

Compatibility

Designed as a standard Dash 202 replacement O-ring for valves, fittings, and fluid-handling assemblies that specify a 0.25-inch ID, 0.125-inch cross section Buna-N seal.

Installation Notes

Installation is typically performed by HVAC technicians, plumbers, or industrial maintenance personnel. Always depressurize and isolate the system before removing the old O-ring and seating the replacement. Lightly lubricating the O-ring with a compatible fluid or O-ring lubricant before installation helps prevent tearing and ensures proper seating. Avoid using petroleum-based lubricants in applications where the sealing fluid is incompatible with mineral oil.