1.5MM CS X 4MM ID BLACK BUNA 70D

Ordered as H1.5X4, this is a black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 4 mm (0.157 in), a cross section of 1.5 mm (0.059 in), and an outside diameter of 7 mm (0.28 in). The o-ring compresses into its gland to block fluid or gas migration across a joint.

This material stands up to many alcohols, water, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) offers strong abrasion and tear resistance, an economical choice for high-volume maintenance programs. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). Applications involving automotive brake fluid or ketones call for a different compound.

You will find this material specified across automotive, general industrial maintenance, and hydraulic and pneumatic systems.

Order part number H1.5X4, sold individually. Unit weight is approximately 0.0394 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.