Value Collection BDNA-MP9990 O-ring Dash 215 Nbr

Product Description

The VALUE COLLECTION BDNA-MP9990 is a Dash 215 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N), a synthetic elastomer widely used in fluid sealing applications across plumbing, hydraulics, pneumatics, and HVAC refrigerant circuits. With a 1-1/16 inch inner diameter and a 1/8 inch cross-section thickness, this round cross-section O-ring provides a reliable static or dynamic seal in grooved fittings, valve bodies, and threaded connections. Plumbers, HVAC technicians, and industrial mechanics reach for Buna-N O-rings when the application involves petroleum-based oils, fuels, water, or refrigerants — materials Nitrile handles well across a broad service temperature range.

This O-ring fits the standard Dash 215 designation, making it a direct drop-in for any groove or port engineered to that dimension. Typical applications include valve stem seals, pump housings, union fittings, manifold ports, and filter housings in residential and light commercial systems. The Buna-N compound resists compression set and maintains its seal integrity under repeated pressure cycling, which is why it appears throughout HVAC, plumbing, pool equipment, and fluid-power assemblies where dependable sealing is required.

Key Features

• Dash 215 standard sizing — drop-in fit for any groove machined to that specification
• Buna-N (Nitrile Butadiene Rubber) compound resists petroleum oils, fuels, and water-based fluids
• Round cross-section profile for consistent groove seating and even compression load distribution
• 1-1/16 inch inner diameter with 1/8 inch cross-section thickness for precise dimensional control
• Lightweight at 0.01 pounds — negligible added weight in any assembly

Compatibility

Designed as an OEM-style replacement or service O-ring for any valve, fitting, pump, or manifold that specifies a Dash 215 O-ring with Nitrile Butadiene Rubber compound.

Installation Notes

Power down or isolate the system and relieve all fluid or air pressure before removing the old O-ring or disassembling the fitting. Inspect the groove for nicks, burrs, or corrosion that could damage the new O-ring or prevent a proper seal. Apply a light coat of compatible lubricant — one approved for the fluid in service — to the O-ring before seating it, and avoid twisting or rolling it out of position during assembly. Work is typically performed by licensed plumbers, HVAC technicians, or qualified mechanics depending on the system involved.