This o-ring is supplied in black Buna-N (Nitrile) 70 Shore A measuring an inside diameter of 74.5 mm (2.933 in), a cross section of 2 mm (0.079 in), and an outside diameter of 78.5 mm (3.09 in), catalogued under part number H2X74.5. It creates a positive seal at flange, piston and rod interfaces without added hardware. Supplementary detail from the product record: Metric O-RING, JIS S75.
Buna-N (Nitrile) is specified here for strong abrasion and tear resistance, reliable performance in both static and dynamic service. Expect good resistance to petroleum-based oils, many alcohols, and greases and lubricants. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service. Exposure to ozone and direct sunlight or ketones will shorten service life.
Common environments for this compound include fluid power, general industrial maintenance, and hydraulic and pneumatic systems.
Order part number H2X74.5, sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
description 2MM CS X 74.5MM ID BLACK BUNA 70D
uf_description2 METRIC O-RING, JIS S75
Actual_OD 78.5 mm (3.09 inch)
Actual_CS 2 mm (0.079 inch)
Actual_ID 74.5 mm (2.933 inch)
ProductCode Description O-Rings - Metric - Commodity