This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A with an inside diameter of 35.6 mm (1.402 in), a cross section of 3.6 mm (0.142 in), and an outside diameter of 42.8 mm (1.69 in), catalogued under part number H3.6X35.6. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
Expect good resistance to many alcohols, hydraulic fluids, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for the most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving automotive brake fluid or ketones call for a different compound.
You will find this material specified across fluid power, construction equipment, and automotive.
Reference part number H3.6X35.6 when ordering; the item is sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Description 3.6MM CS X 35.6MM ID BLACK BUNA 70D
Actual Outside Diameter 42.8 mm (1.69 inch)
Actual Cross Section 3.6 mm (0.142 inch)
Actual Inside Diameter 35.6 mm (1.402 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity