Buna 70-330-Black-Pk5

Ordered as SB-H70330-5, this is an AS568-330 black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 2.1 in (53.34 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 2.52 in (64.01 mm). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load. The catalog record notes: 2.5IDX2.125"ODX.1875"CS.

As a material, Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs, strong abrasion and tear resistance. The material holds up against propane and butane, hydraulic fluids, and water. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving ozone and direct sunlight or strong acids call for a different compound.

You will find this material specified across general industrial maintenance, automotive, and agricultural equipment.

SB-H70330-5 ships by the bag. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.