3.5MM CS X 30.7MM ID BLACK BUNA 70D

H3.5X30.7 is a black Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 30.7 mm (1.209 in), a cross section of 3.5 mm (0.138 in), and an outside diameter of 37.7 mm (1.48 in). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load. Supplementary detail from the product record: Metric O-RING, JIS P31.

This material stands up to many alcohols, greases and lubricants, and water. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It should not be specified for service in automotive brake fluid or ozone and direct sunlight.

You will find this material specified across hydraulic and pneumatic systems, automotive, and construction equipment.

Reference part number H3.5X30.7 when ordering; the item is sold individually. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.