This o-ring is supplied in black Buna-N (Nitrile) 90 Shore A supplied with an inside diameter of 29 mm (1.142 in), a cross section of 3 mm (0.118 in), and an outside diameter of 35 mm (1.38 in), catalogued under part number H90M3X29. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
It resists water, petroleum-based oils, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is known for reliable performance in both static and dynamic service, an economical choice for high-volume maintenance programs. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where strong acids or ozone and direct sunlight are present.
Common environments for this compound include fluid power, general industrial maintenance, and automotive.
Order part number H90M3X29, sold individually. Unit weight is approximately 0.943 g. Check the compound against your process media, pressure and temperature before committing to a design.
Description 3MM CS X 29MM ID BLACK BUNA 90D
Actual Outside Diameter 35 mm (1.38 inch)
Actual Cross Section 3 mm (0.118 inch)
Actual Inside Diameter 29 mm (1.142 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity