Part number H70MD392 is an AS568-392 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 22.94 in (582.68 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 23.36 in (593.34 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
Buna-N (Nitrile) offers low compression set under sustained load, strong abrasion and tear resistance. The compound resists propane and butane, many alcohols, and petroleum-based oils. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in strong acids or ketones.
The compound is metal detectable for HACCP and foreign-body control programs. It sees regular use in agricultural equipment, automotive, and general industrial maintenance.
Order part number H70MD392, sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Description -392 BLACK BUNA 70D O-RING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 22.94 inch (582.68 mm)
Actual Outside Diameter 23.36 inch (593.34 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable