2MM CS X 8MM ID BLACK BUNA 90D

H90M2X8 is a black Buna-N (Nitrile) 90 Shore A O-Ring measuring an inside diameter of 8 mm (0.315 in), a cross section of 2 mm (0.079 in), and an outside diameter of 12 mm (0.47 in). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

This material stands up to water, hydraulic fluids, and many alcohols. Buna-N (Nitrile) offers strong abrasion and tear resistance, low compression set under sustained load. 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 ketones or automotive brake fluid are present.

Maintenance and OEM teams specify it across fluid power, construction equipment, and automotive.

Reference part number H90M2X8 when ordering; the item is sold individually. Unit weight is approximately 0.1427 g. 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.