-444 BLACK BUNA 70D O-RING

Ordered as H70MD444, this is an AS568-444 black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 7.725 in (196.22 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 8.275 in (210.19 mm). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Expect good resistance to petroleum-based oils, many alcohols, and hydraulic fluids. Buna-N (Nitrile) is specified for strong abrasion and tear resistance, the most widely specified general-purpose sealing elastomer. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Exposure to ketones or strong acids will shorten service life.

This item is metal detectable for HACCP and foreign-body control programs. You will find this material specified across agricultural equipment, automotive, and fluid power.

Reference part number H70MD444 when ordering; the item is sold individually. Nominal inside diameter is listed as 7 3/4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing.