5.7MM CS X 199.3MM ID BLACK BUNA 70D

H5.7X199.3 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 199.3 mm (7.846 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 210.7 mm (8.3 in). In service, this o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. Source specification: Metric O-RING, JIS G200.

As a material, Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs and low compression set under sustained load. This material stands up to many alcohols, water, and hydraulic fluids. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ozone and direct sunlight or polar solvents.

Maintenance and OEM teams specify it across agricultural equipment, construction equipment, and fluid power.

This item is sold individually under part number H5.7X199.3. Unit weight is approximately 19.785 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.