Value Collection BDNA--9991-2 O-ring Dash 218 Nbr

Product Description

The VALUE COLLECTION BDNA--9991-2 is a Dash 218 O-ring made from Nitrile Butadiene Rubber (NBR) with a round cross section. It measures 1-1/4 inches inside diameter and 1/8 inches thick, with a durometer hardness of 70 Shore A. NBR offers reliable resistance to petroleum-based oils, fuels, and hydraulic fluids, making this O-ring a standard sealing solution in fluid-handling systems. Plumbers, HVAC technicians, and maintenance professionals use this O-ring type as a static or dynamic seal in a wide range of mechanical and plumbing assemblies.

This O-ring is suited for use in residential and commercial plumbing, HVAC equipment, hydraulic systems, and general mechanical assemblies where a petroleum-fluid-compatible seal is required. Its inch-system sizing follows standard Dash 218 dimensions, making it straightforward to source as a direct replacement in maintenance and repair applications. Minimum order quantity is 25 pieces; each package ships as a single unit quantity.

Key Features

• Dash 218 standard sizing: 1-1/4 inches inside diameter, 1/8 inches thick
• Nitrile Butadiene Rubber (NBR) material resists petroleum oils, fuels, and hydraulic fluids
• 70 Shore A durometer provides a balance of flexibility and compression resistance
• Round cross section for consistent sealing contact in standard O-ring grooves
• Inch-system measurement for straightforward replacement in standard fittings and assemblies

Compatibility

Designed as a standard Dash 218 inch-series O-ring replacement for plumbing, HVAC, hydraulic, and general mechanical assemblies requiring an NBR seal of this size.

Installation Notes

O-ring replacement is typically performed by licensed plumbers, HVAC technicians, or qualified maintenance personnel. Depressurize and drain the system completely before removing the existing seal. Inspect the groove for scoring or debris before seating the new O-ring. Avoid twisting the O-ring during installation, and confirm compatibility of NBR with the specific fluid media in the application before use.