-374 BLACK BUNA 90D O-RING

APG stocks the H90374, an AS568-374 black Buna-N (Nitrile) 90 Shore A O-Ring built to an inside diameter of 9.225 in (234.32 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 9.645 in (244.98 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

As a material, Buna-N (Nitrile) delivers low compression set under sustained load and an economical choice for high-volume maintenance programs. This material stands up to petroleum-based oils, greases and lubricants, and water. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. It is not the right choice where strong acids or polar solvents are present.

It sees regular use in fluid power, automotive, and construction equipment.

Reference part number H90374 when ordering; the item is sold individually. Unit weight is approximately 21.605 g and nominal inside diameter is listed as 9 1/4 inch. Check the compound against your process media, pressure and temperature before committing to a design.