Buna 70-428-Black-Pk5

This o-ring is supplied in AS568-428 black Buna-N (Nitrile) 70 Shore A supplied with an inside diameter of 4.85 in (123.19 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 5.4 in (137.16 mm), catalogued under part number SB-H70428-5. It provides a reliable static or dynamic seal by deforming into its gland under assembly load. Supplementary detail from the product record: 5.375IDX4.875"ODX.25"CS.

It resists propane and butane, water, and hydraulic fluids. Buna-N (Nitrile) delivers low compression set under sustained load and the most widely specified general-purpose sealing elastomer. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Exposure to ozone and direct sunlight or automotive brake fluid will shorten service life.

Typical settings include agricultural equipment, general industrial maintenance, and construction equipment.

Order part number SB-H70428-5, sold by the bag. Review your operating media and conditions against this specification before installation.