Ordered as H2X74, this is a black Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 74 mm (2.913 in), a cross section of 2 mm (0.079 in), and an outside diameter of 78 mm (3.07 in). The o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
As a material, Buna-N (Nitrile) is valued for strong abrasion and tear resistance, low compression set under sustained load. The material holds up against greases and lubricants, water, and petroleum-based oils. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with strong acids or automotive brake fluid.
Common environments for this compound include hydraulic and pneumatic systems, construction equipment, and agricultural equipment.
Order part number H2X74, sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application.
description 2MM CS X 74MM ID BLACK BUNA 70D
uf_description2 METRIC O-RING
Actual_OD 78 mm (3.07 inch)
Actual_CS 2 mm (0.079 inch)
Actual_ID 74 mm (2.913 inch)
ProductCode Description O-Rings - Metric - Commodity