4MM CS X 16MM ID BLACK BUNA 70D

Ordered as H4X16, this is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 16 mm (0.63 in), a cross section of 4 mm (0.157 in), and an outside diameter of 24 mm (0.94 in). The o-ring delivers dependable bidirectional sealing in a compact groove envelope.

It resists greases and lubricants, many alcohols, and water. That behavior comes from the compound itself: Buna-N (Nitrile) is specified for strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. Continuous operating temperature is published at -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 general industrial maintenance, agricultural equipment, and automotive.

Reference part number H4X16 when ordering; the item is sold individually. Unit weight is approximately 0.9643 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.