4MM CS X 149MM ID BLACK BUNA 70D

H4X149 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 149 mm (5.866 in), a cross section of 4 mm (0.157 in), and an outside diameter of 157 mm (6.18 in). In service, this o-ring compresses into its gland to block fluid or gas migration across a joint.

The material holds up against water, petroleum-based oils, and many alcohols. Buna-N (Nitrile) is specified for the most widely specified general-purpose sealing elastomer and an economical choice for high-volume maintenance programs. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.

Common environments for this compound include fluid power, automotive, and construction equipment.

Reference part number H4X149 when ordering; the item is sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation.