-318 BLACK BUNA 90D O-RING

The H90318 is an AS568-318 black Buna-N (Nitrile) 90 Shore A O-Ring with an inside diameter of 0.975 in (24.77 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.395 in (35.43 mm). This o-ring remains the most cost-effective sealing element available for pressurized assemblies.

Buna-N (Nitrile) offers an economical choice for high-volume maintenance programs and low compression set under sustained load. The material holds up against water, hydraulic fluids, and greases and lubricants. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). It is not the right choice where strong acids or ketones are present.

It sees regular use in general industrial maintenance, hydraulic and pneumatic systems, and construction equipment.

This item is sold individually under part number H90318. Unit weight is approximately 2.8514 g and nominal inside diameter is listed as 1 inch. Check the compound against your process media, pressure and temperature before committing to a design. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.