Buna 70-128-Black-Pk15

The SB-H70128-15 is an AS568-128 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 1.487 in (37.77 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.693 in (43 mm). This o-ring remains the most cost-effective sealing element available for pressurized assemblies. Additional detail on this item: 1.6875IDX1.5"ODX.0938"CS.

As a material, Buna-N (Nitrile) offers low compression set under sustained load and an economical choice for high-volume maintenance programs. It resists petroleum-based oils, many alcohols, and propane and butane. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with strong acids or ozone and direct sunlight.

You will find this material specified across construction equipment, hydraulic and pneumatic systems, and agricultural equipment.

Order part number SB-H70128-15, sold by the bag. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.