5.7MM CS X 124.6MM ID BLACK BUNA 70D

Part number H5.7X124.6 is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 124.6 mm (4.906 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 136 mm (5.35 in). An o-ring delivers dependable bidirectional sealing in a compact groove envelope. The catalog record notes: Metric O-RING, JIS P125.

As a material, Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, strong abrasion and tear resistance. This material stands up to petroleum-based oils, hydraulic fluids, and water. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Applications involving ketones or ozone and direct sunlight call for a different compound.

Maintenance and OEM teams specify it across automotive, general industrial maintenance, and hydraulic and pneumatic systems.

Reference part number H5.7X124.6 when ordering; the item is sold individually. Unit weight is approximately 12.69 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.