8.4MM CS X 199.5MM ID BLACK BUNA 90D

H90M8.4X199.5 is a black Buna-N (Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 199.5 mm (7.854 in), a cross section of 8.4 mm (0.331 in), and an outside diameter of 216.3 mm (8.52 in). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope. Supplementary detail from the product record: Metric O-RING, JIS P200.

This material stands up to hydraulic fluids, greases and lubricants, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) delivers strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to ketones or ozone and direct sunlight will shorten service life.

Typical settings include construction equipment, hydraulic and pneumatic systems, and fluid power.

This item is sold individually under part number H90M8.4X199.5. Unit weight is approximately 50 g. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.