5.7MM CS X 199.3MM ID BLACK BUNA 90D

H90M5.7X199.3 is a black Buna-N (Nitrile) 90 Shore A O-Ring measuring 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. This item is further identified as Metric O-RING, JIS G200.

As a material, Buna-N (Nitrile) is valued for strong abrasion and tear resistance, the most widely specified general-purpose sealing elastomer. It resists petroleum-based oils, propane and butane, and water. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).

Maintenance and OEM teams specify it across hydraulic and pneumatic systems, automotive, and fluid power.

Stocked as H90M5.7X199.3 and sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation.