3.5MM CS X 43.7MM ID BLACK BUNA 90D

H90M3.5X43.7 is a black Buna-N (Nitrile) 90 Shore A O-Ring with an inside diameter of 43.7 mm (1.72 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 50.7 mm (2 in). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load. The catalog record notes: Metric O-RING, JIS P44.

Buna-N (Nitrile) is known for strong abrasion and tear resistance, low compression set under sustained load. The material holds up against hydraulic fluids, petroleum-based oils, and greases and lubricants. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in strong acids or ozone and direct sunlight.

Typical settings include general industrial maintenance, fluid power, and hydraulic and pneumatic systems.

Stocked as H90M3.5X43.7 and sold individually. Unit weight is approximately 1.9848 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.