This o-ring is supplied in black Buna-N (Nitrile) 90 Shore A built to an inside diameter of 44.4 mm (1.748 in), a cross section of 3.1 mm (0.122 in), and an outside diameter of 50.6 mm (1.99 in), catalogued under part number H90M3.1X44.4. It provides a reliable static or dynamic seal by deforming into its gland under assembly load. Additional detail on this item: Metric O-RING, JIS G45.
The material holds up against propane and butane, petroleum-based oils, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is known for low compression set under sustained load, reliable performance in both static and dynamic service. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C).
It sees regular use in hydraulic and pneumatic systems, automotive, and agricultural equipment.
H90M3.1X44.4 ships individually. Unit weight is approximately 1.5831 g. Check the compound against your process media, pressure and temperature before committing to a design.
Description 3.1MM CS X 44.4MM ID BLACK BUNA 90D
Actual Outside Diameter 50.6 mm (1.99 inch)
Actual Cross Section 3.1 mm (0.122 inch)
Actual Inside Diameter 44.4 mm (1.748 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity