8-014 BLACK BUNA 90D BACK-UP RING

The HB90014 is an AS568-014 black Buna-N (Nitrile) 90 Shore A Back-Up Ring measuring an inside diameter of 0.489 in (12.42 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 0.629 in (15.98 mm). This back-up ring allows a standard o-ring to operate at higher pressures than it could unsupported.

Expect good resistance to hydraulic fluids, propane and butane, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for an economical choice for high-volume maintenance programs and low compression set under sustained load. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C).

Common environments for this compound include fluid power, automotive, and construction equipment.

Order part number HB90014, sold individually. Unit weight is approximately 0.093 g and nominal inside diameter is listed as 1/2 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.