-111 BLACK BUNA 90D O-RING

H90111 is an AS568-111 black Buna-N (Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 0.424 in (10.77 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 0.63 in (16 mm). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The material holds up against greases and lubricants, water, and propane and butane. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for low compression set under sustained load and the most widely specified general-purpose sealing elastomer. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Exposure to strong acids or automotive brake fluid will shorten service life.

You will find this material specified across construction equipment, agricultural equipment, and automotive.

Order part number H90111, sold individually. Unit weight is approximately 0.3065 g and nominal inside diameter is listed as 7/16 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.