1.78MM CS X 9.75MM ID BLACK BUNA 90D

Ordered as H90M1.78X9.75, this is a black Buna-N (Nitrile) 90 Shore A O-Ring measuring an inside diameter of 9.75 mm (0.384 in), a cross section of 1.78 mm (0.07 in), and an outside diameter of 13.31 mm (0.52 in). The o-ring compresses into its gland to block fluid or gas migration across a joint.

The material holds up against propane and butane, hydraulic fluids, and many alcohols. Buna-N (Nitrile) is specified for low compression set under sustained load, strong abrasion and tear resistance. Published continuous service range is -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in ketones or automotive brake fluid.

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

Reference part number H90M1.78X9.75 when ordering; the item is sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application.