-358 BLACK BUNA 70D O-RING

The H70358 is an AS568-358 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 5.6 in (142.24 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 6.02 in (152.91 mm). This o-ring compresses into its gland to block fluid or gas migration across a joint.

Buna-N (Nitrile) is valued for the most widely specified general-purpose sealing elastomer and low compression set under sustained load. The compound resists petroleum-based oils, many alcohols, and greases and lubricants. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where ketones or polar solvents are present.

Maintenance and OEM teams specify it across hydraulic and pneumatic systems, automotive, and fluid power.

Order part number H70358, sold individually. Unit weight is approximately 0.0127 g and nominal inside diameter is listed as 5 5/8 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.