-345 BLACK BUNA 70D O-RING

This o-ring is supplied in AS568-345 black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 3.975 in (100.97 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.395 in (111.63 mm), catalogued under part number H70MD345. It delivers dependable bidirectional sealing in a compact groove envelope.

Expect good resistance to many alcohols, petroleum-based oils, and water. That behavior comes from the compound itself: Buna-N (Nitrile) is valued for an economical choice for high-volume maintenance programs and low compression set under sustained load. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Exposure to ketones or polar solvents will shorten service life.

The compound is metal detectable for HACCP and foreign-body control programs. Common environments for this compound include agricultural equipment, automotive, and general industrial maintenance.

Order part number H70MD345, sold individually. Nominal inside diameter is listed as 4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.