Buna 70-208-Black-Pk25

SB-H70208-25 is an AS568-208 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 0.609 in (15.47 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 0.887 in (22.53 mm). In service, this o-ring compresses into its gland to block fluid or gas migration across a joint. The catalog record notes: 0.139CSX0.609"IDX0.887"OD.

Buna-N (Nitrile) is specified for the most widely specified general-purpose sealing elastomer, 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). It should not be specified for service in ozone and direct sunlight or polar solvents.

It sees regular use in general industrial maintenance, fluid power, and construction equipment.

This item is sold by the bag under part number SB-H70208-25. Nominal inside diameter is listed as 5/8 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.