-156 BLACK BUNA 70D O-RING

Part number H70156 is an AS568-156 black Buna-N (Nitrile) 70 Shore A O-Ring built to an inside diameter of 4.237 in (107.62 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 4.443 in (112.85 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer and economical choice for high-volume maintenance programs. This material stands up to many alcohols, hydraulic fluids, and propane and butane. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in automotive brake fluid or strong acids.

Common environments for this compound include automotive, general industrial maintenance, and hydraulic and pneumatic systems.

Reference part number H70156 when ordering; the item is sold individually. Unit weight is approximately 2.33 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. 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.