-206 BLACK BUNA 70D O-RING

Ordered as H70MD206, this is an AS568-206 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 0.484 in (12.29 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 0.762 in (19.35 mm). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

This material stands up to water, propane and butane, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) delivers low compression set under sustained load and 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 ozone and direct sunlight or ketones are present.

The compound is metal detectable for HACCP and foreign-body control programs. You will find this material specified across construction equipment, agricultural equipment, and automotive.

Reference part number H70MD206 when ordering; the item is sold individually. Check the compound against your process media, pressure and temperature before committing to a design.