8.4MM CS X 159.1MM ID BLACK BUNA 70D

Ordered as H8.4X159.1, this is a black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 159.1 mm (6.264 in), a cross section of 8.4 mm (0.331 in), and an outside diameter of 175.9 mm (6.93 in). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Buna-N (Nitrile) is specified here for low compression set under sustained load and economical choice for high-volume maintenance programs. Expect good resistance to water, hydraulic fluids, and petroleum-based oils. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving ozone and direct sunlight or ketones call for a different compound.

Maintenance and OEM teams specify it across hydraulic and pneumatic systems, agricultural equipment, and automotive.

H8.4X159.1 ships individually. Unit weight is approximately 35.675 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.