-384 BLACK BUNA 70D O-RING

Part number H70MD384 is an AS568-384 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 14.975 in (380.37 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 15.395 in (391.03 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The material holds up against many alcohols, water, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for low compression set under sustained load, strong abrasion and tear resistance. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving ketones or polar solvents call for a different compound.

This o-ring is metal detectable for HACCP and foreign-body control programs. You will find this material specified across automotive, fluid power, and general industrial maintenance.

Reference part number H70MD384 when ordering; the item is sold individually. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.