3.5MM CS X 34.7MM ID BLACK BUNA 90D

This o-ring is supplied in black Buna-N (Nitrile) 90 Shore A built to an inside diameter of 34.7 mm (1.366 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 41.7 mm (1.64 in), catalogued under part number H90M3.5X34.7. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. The catalog record notes: Metric O-RING, JIS P35.

Expect good resistance to propane and butane, water, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for the most widely specified general-purpose sealing elastomer and low compression set under sustained load. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Applications involving ketones or polar solvents call for a different compound.

Common environments for this compound include fluid power, automotive, and agricultural equipment.

Reference part number H90M3.5X34.7 when ordering; the item is sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.