5.7MM CS X 139.6MM ID BLACK BUNA 90D

Ordered as H90M5.7X139.6, this is a black Buna-N (Nitrile) 90 Shore A O-Ring supplied with an inside diameter of 139.6 mm (5.496 in), a cross section of 5.7 mm (0.224 in), and an outside diameter of 151 mm (5.94 in). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load. This item is further identified as Metric O-RING, JIS P140.

The compound resists water, many alcohols, and propane and butane. Buna-N (Nitrile) is specified for low compression set under sustained load and the most widely specified general-purpose sealing elastomer. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Applications involving strong acids or ozone and direct sunlight call for a different compound.

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

H90M5.7X139.6 ships individually. As always, verify media compatibility and operating conditions against the requirements of your specific application.