3.1MM CS X 49.4MM ID BLACK BUNA 70D

Part number H3.1X49.4 is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 49.4 mm (1.945 in), a cross section of 3.1 mm (0.122 in), and an outside diameter of 55.6 mm (2.19 in). An o-ring remains the most cost-effective sealing element available for pressurized assemblies. This item is further identified as Metric O-RING, JIS G50.

Buna-N (Nitrile) is specified here for economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. The material holds up against propane and butane, petroleum-based oils, and many alcohols. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ozone and direct sunlight or strong acids.

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

Stocked as H3.1X49.4 and sold individually. Unit weight is approximately 1.5472 g. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.