Part number H70MD903 is an AS568-903 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 0.301 in (7.65 mm), a cross section of 0.064 in (1.63 mm), and an outside diameter of 0.429 in (10.9 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer and economical choice for high-volume maintenance programs. It resists greases and lubricants, propane and butane, and water. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ketones or ozone and direct sunlight are present.
This item is metal detectable for HACCP and foreign-body control programs. Common environments for this compound include agricultural equipment, construction equipment, and fluid power.
Order part number H70MD903, sold individually. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description -903 BLACK BUNA 70D O-RING
Actual Cross Section 0.064 inch (1.63 mm)
Actual Inside Diameter 0.301 inch (7.65 mm)
Actual Outside Diameter 0.429 inch (10.9 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable