1.9MM CS X 9.8MM ID BLACK BUNA 90D

APG stocks the H90M1.9X9.8, a black Buna-N (Nitrile) 90 Shore A O-Ring measuring an inside diameter of 9.8 mm (0.386 in), a cross section of 1.9 mm (0.075 in), and an outside diameter of 13.6 mm (0.54 in). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load. The catalog record notes: Metric O-RING, JIS P10.

Buna-N (Nitrile) is specified here for low compression set under sustained load and most widely specified general-purpose sealing elastomer. This material stands up to water, greases and lubricants, and many alcohols. 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 automotive brake fluid or polar solvents are present.

It sees regular use in general industrial maintenance, construction equipment, and fluid power.

Reference part number H90M1.9X9.8 when ordering; the item is sold individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.